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SJD/sdc Overburden Analysis_Memo_1UP005.001_SJD_20100813_DRAFT.doc, Aug. 13, 10, 12:01 PM

Memo To: Stuart Arkley, MDNR Date: August 13, 2010

cc: Jim Scott, PolyMet Miguel Wong, Barr Engineering

From: Stephen Day Christie Kearney, Barr Engineering

Subject: Results of Analysis from Overburden Drilling Program – Update for March 2010 Test Pit Program NorthMet Project – DRAFT

Project #: 1UP005.001

1 Introduction

This memorandum provides chemical results from two analytical programs for overburden samples collected from the NorthMet Project in the area of the proposed mine site. The memorandum provides conclusions on the main factors controlling differences in leaching characteristics of the overburden and estimates of contact water chemistry. The original Overburden Geochemical Characterization Plan was provided to the MDNR on February 22, 20081 and the accompanying analytical plan was provided to the MDNR on March 18, 20082. This program involved drilling to characterize the full overburden profile from surface to bedrock. Both plans were reviewed and accepted by the MDNR with the understanding that subsequent characterization might be required prior to and during excavation of overburden material. Results of this program were provided in two memoranda dated October 16, 2008 (fine particle solids and leachate chemical analysis)3 and June 25, 2009 (overburden pebble counts and analysis)4. An opportunity to collect additional overburden samples arose as a result of a USFS requirement to dig sumps to contain drilling fluids from bedrock drilling occurring as part of further resource delineation by PolyMet. As a result, a sump spoil sampling program was designed and implemented by Barr Engineering in cooperation with MDNR to provide additional data on the geochemical characteristics of unsaturated overburden. The details of the program were developed through several emails between Barr and MDNR. Results of this second program have been compared to the findings from the original program rather than combining results into a single dataset because the sampling methods and investigation scopes were different. The sampling locations were pre-determined by the bedrock drilling locations rather than being designed to characterize particular features of the overburden.

1 SRK Consulting, PolyMet Mining and Barr Engineering. 2008. Overburden Geochemical Characterization Plan in Support of EIS – DRAFT NorthMet Project. February 22, 2008. 2 SRK Consulting, PolyMet Mining and Barr Engineering. 2008. Analysis of Samples from Overburden Drilling Program, NorthMet Project – DRAFT. March 18, 2008. 3 SRK Consulting. 2008. Results of Analysis from Overburden Drilling Program. Doc IDGC05. October 16, 2008. 4 SRK Consulting. 2009. Overburden Pebble Chemical Analysis – DRAFT. June 25, 2009.

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2 January 2008 Drilling Program

2.1 Summary of Field Programs

A total of 225 feet of drilling was completed for geochemical characterization of overburden. The following summary of the field observations was provided in the analytical plan. As expected, drift in the area has complex lithology. The majority of intervals (75%) were characterized as dominantly sandy till with varying quantities of gravels and silts. A few intervals were dominated by gravels (21 feet). Dominantly silt intercepts were unusual (two intervals totaling 5 feet). The total intersection of peaty materials was 25 feet. The main feature of the overburden profile was the presence of oxidized (brown) and unoxidized (olive and grey) tills corresponding roughly to the presence of the water table. Of the thirteen mechanically-drilled holes, only two were in a fully unsaturated profile (holes 10 and 14) while the others were either completely saturated (four holes) or were unsaturated near surface and saturated below the saturated elevations (seven holes). Measurements of oxidation reduction potential (ORP) in field rinse tests showed a strong negative correlation with depth. Near surface samples had typical ORPs of 100 to 300 mV, whereas deeper samples had ORPs below 100 mV and as low as -200 mV. Loggers recorded the presence of what appeared to be secondary iron sulfides in the chemically-reduced overburden. Visual observations were supported by the smelled evolution of hydrogen sulfide gas when 10% hydrochloric acid was applied. Surface tills appeared to be weakly acidic (rinse pHs less than 6.5) as shown by the correlation of rinse pH with depth. Deeper tills had rinse pHs greater than 6. The presence of acidic conditions generally did not correlate with conductivity) indicating that the variation of rinse pH was not significantly related to the presence of acidic salts as would be produced by oxidation of sulfide minerals. In fact, conductivities for samples showing rinse pHs less than 5.5 (the typical pH of deionized water) were mostly low. The exceptions were two samples with conductivity above 100 μS/cm and pHs below 5.6. These measurements did not correspond to the presence of mineralized rock. As described below, some samples of the deeper tills became acidic prior to laboratory testing. Other than brown coatings related to weathering of iron-bearing components of the overburden, chemical precipitates were uncommon. White cement and lenses were observed in drill hole 10, but they did not react with dilute hydrochloric acid. The overburden rarely reacted with hydrochloric acid which indicated low concentrations of carbonate minerals.

2.2 Sample Selection and Analysis

A discussion of sample selection, as well as a sample analysis list, was provided in the analytical plan. The analytical plan was completed for the size fractions finer than 2 mm (-2 mm+74 µm and -74 µm), and the meteoric water mobility procedure on splits of the whole samples. The pebble counts are in progress (+4 mm size fraction) and once completed the pebbles will be re-combined with the -4+2 mm fraction for acid-base accounting and metal analysis on the +2 mm fraction. The laboratory reported that 36 of the 37 samples submitted for analysis had sufficient pebbles (more than 180) for counting.



2.3 Results

2.3.1 Data Assessment Approach The Geochemical Characterization Plan was designed to address various factors that could influence the geochemical characteristics of overburden, which included: Geological sources distant from the project area where the glacial ice originated. Underlying bedrock geology. Distance from mineralized bedrock (mainly Unit 1 of the Duluth Complex and the Virginia

Formation). Glacial and periglacial deposition environment. Groundwater level during deposition. Current position of the water table (degree of saturation). Field observations during drilling indicated that oxidation-reduction conditions in the overburden varied significantly and potentially exerted an important control on leaching potential of the overburden. This factor was also considered in the analysis. The following sections provide descriptive statistics and discussion with respect to these factors. The complete dataset is attached as Appendix A. Metal analysis was performed using two acid digestion methods (aqua regia and four acid) both followed by determination of concentrations using ICP. The difference between results for the two analytical methods was insignificant though in the case of nickel slightly higher concentrations were reported for the stronger four acid digestion (Figure 1) probably reflecting the more complete digestion of silicate minerals by this digestion. Therefore, subsequent review of the data considered results from the four-acid digestion. The summaries below focus on the main parameters believed to be indicative of the influence of mineralized bedrock on the overburden (sulfur, copper and nickel).

2.3.2 Entire Dataset Effect of Particle Size Graphs comparing sulfur, copper and nickel concentrations in -74 µm and -2 mm+74 µm fractions are presented in Figure 2. For sulfur, concentrations in the finer fraction were greater than in the coarse fraction for concentrations above 0.05% with the exception of two samples which showed nearly equivalent sulfur concentrations in the two fractions. Concentrations in the two fractions were not well correlated. For copper, concentrations in the two fractions were correlated but were also mostly greater in the fine fraction. Nickel showed similar results except that at higher concentrations, the correlation was absent (Figure 2). Nickel concentrations were relatively stable below 200 ppm in the coarse fraction but increased to near 500 ppm for two samples. These samples also contained the highest sulfur concentrations in mineral overburden. The highest sulfur concentration in a peat (0.61%) did not contain elevated nickel concentrations. The significant difference in sulfur concentrations for the size fractions may be linked to the observation of secondary sulfide minerals in the overburden rather than differences in the particle size distribution of primary sulfur in the overburden. There is no particular reason to expect sulfur to be concentrated in the fine fraction, and it would be expected that any fine-grained sulfur produced



during deposition of the till would be oxidized following deposition. The base level sulfur concentrations in the coarser fraction (below 0.05%) are typical of background sulfur concentrations in rocks whereas the fine fraction concentrations indicated enrichment of sulfur. Overall Dataset Distribution Distributions for the selected parameters are presented in Table 1. Data for many parameters were strongly positively skewed hence the median provides an indication of central or typical values while the 95th percentile and maximum values indicate extreme values. Measurements of oxidation reduction potential (ORP) had 5th and 95th percentile values of -90 and 290, respectively. As was discussed in the analytical plan, ORP showed a strong negative correlation with depth. Near surface samples had typical ORPs of 100 to 300 mV, whereas deeper samples had ORPs below 100 mV and as low as -200 mV. The statistics indicate that sulfate, which would likely be formed by oxidation of sulfur occurred at very low concentrations. Sulfur is mainly expected to occur as sulfide with the exception of peat for which sulfur may also occur in organic form. Neutralization potentials were low and carbonate was rarely detected (Appendix A) indicating that rapidly acid consuming minerals were present at low concentrations.



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Figure 1: Comparison of Copper and Nickel Concentrations by Different Analytical Methods

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Figure 2: Comparison of Sulfur, Copper and Nickel Concentrations in Two Particle Size Fractions

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Table 1: Statistics for Selected Overburden Characteristics Parameter Unit Fraction n Minimum P5 P50 P95 Maximum

pH1 -5 mm 44 4.8 5.2 6.4 6.5 8.7

ORP1 mV -5 mm 43 -209 -90 98 95 287

Total Sulfur2 % S -74 µm 37 0.01 0.01 0.05 0.10 0.55

Total Sulfur2 % S -2 mm+74 µm 37 <0.01 <0.01 0.01 0.05 0.16

Sulfate3 % S -74 µm 36 <0.01 <0.01 0.01 0.02 0.04

Sulfate3 % S -2 mm+74 µm 37 <0.01 <0.01 <0.01 0.01 0.03

Cu4 ppm -74 µm 37 20 28 90 180 848

Cu4 ppm -2 mm+74 µm 37 10 18 60 109 402

Ni4 ppm -74 µm 37 30 38 80 113 406

Ni4 ppm -2 mm+74 µm 37 20 20 70 76 180

pH5 Whole 14 3.4 3.6 7.1 6.5 7.8

Sulfate5 mg/L Whole 14 1.74 2.8 32 69 203

Cu5 mg/L Whole 14 0.003 0.004 0.009 0.06 0.28

Ni5 mg/L Whole 14 0.0008 0.001 0.01 0.25 1.3

\\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\Data\2008-10_Compiled_Data\[Compiled_Overburden_Data.1UP005.001.mc.20081021.xls]

General Method: 1 Field rinse test

2 Leco Furnace

3 HCl soluble, Sobek et al. 1978

4 Four acid digestion

5 MWMP leachable

Median values for sulfur, copper and nickel were comparable to global crustal values with slight enrichment for copper whereas the extreme values are consistent with proximity to sulfide mineralized rock. MWMP leachate pH for 14 samples was strongly skewed with a median of 7.1, and the 5th and 95th percentile pH values were 3.6 and 7.8, respectively. Two samples had acidic pHs below 4, and two had pHs between 5 and 6. The two samples with lowest pHs were not acidic when tested in the field but became acidic between sample collection and analysis. As described subsequently, this appears to be due to oxidation of secondary sulfide minerals formed under saturated and chemically reducing conditions in the overburden. In the majority of samples, the dominant anion in the leachate was sulfate, followed by alkalinity and chloride. Major cation concentrations were variable with all four major ions (calcium, magnesium, sodium and potassium) contributing to the ion balance (Figure 3). Trace metal concentrations in the leachates were correlated to pH with the highest concentrations at lowest pHs. The correlation was apparent for Al, As, Ba, Cd, Co, Cr, Cu, Fe, Pb, Ni and Zn. Copper and nickel are shown in Figure 4.



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2.3.3 Geological Sources Up-Ice of the Project Area Borehole RS-14B was underlain by Virginia Formation in the assumed direction up-ice of the Duluth Complex. The hole encountered bedrock at 5 feet. The soil sample (peat) collected at RS-14B had elevated sulfur content (0.15%), a typical copper concentration (87 ppm) and a slightly low nickel concentration (59 ppm) when compared to the whole dataset. Compared to the whole dataset, the upper till sample collected at this location had a low rinse pH (5.41), and slightly higher than typical sulfur, copper and nickel concentrations (0.09%, 190 ppm and 110 ppm, respectively).

2.3.4 Underlying Bedrock Geology Table 2 presents comparative statistics for mineral overburden samples overlying Virginia Formation, Unit 1 Troctolite, and “Other” (Units above 1) Troctolite bedrock (5, 12, and 20 samples, respectively). Figure 4 presents plots of metal content versus a ratio of depth to depth to bedrock. The plots indicate that depth is of little significance to metal concentrations. Median sulfur concentrations were greatest in samples overlying Virginia Formation bedrock (0.13%), followed by Unit 1 Troctolite (0.06%) and Other Troctolite (0.02%). Extreme values, however, appeared to be unrelated to bedrock type. Median and extreme copper and nickel concentrations were greatest in samples overlying Unit 1 Troctolite. Leachate from the R14B sample overlying Virginia Formation bedrock had one of the lowest pH values (3.7) and much higher than typical sulfate, copper, and nickel concentrations (188, 0.11, and 0.36 mg/L, respectively). MWMP leachate pHs for six samples overlying Unit 1 Troctolite bedrock were near neutral (7. 1 to 7.7) in all but one sample which had a pH of 5.7 (Table 3). The median and 95th percentile sulfate concentrations were 32 and 149 mg/L, respectively. Leachate pH for seven samples overlying Other Troctolite bedrock varied from 3.4 to 8.1 (with a median value of 6.9) resulting in a wide range of leachable sulfate and metal concentrations. Overall, the data appeared to indicate bedrock geology exerts a subtle control on the sulfur content of the overburden (i.e. the comparatively elevated median concentrations for samples overlying the Virginia Formation and Unit 1) but that higher sulfur concentrations are not linked to bedrock.

2.3.5 Distance from Mineralized Bedrock Figure 5 presents the spatial distribution of weighted average sulfur, copper and nickel concentrations in the main stratigraphic horizons for each hole to evaluate down-ice movement of potentially metal-rich bedrock from the mineralized Virginia Formation and Unit 1 of the Duluth Complex. In general, it is expected that these effects might be different for the stratigraphic units. As noted in the Section 4.4, expected differences in bedrock (range of sulfur concentrations) is apparent in the overburden. This implies that ice movement has not eliminated the effect of bedrock but it is apparent from the range of sulfur concentrations in the overburden that other factors have resulted in variation in sulfur concentrations which may in part be attributed to movement of sulfur-bearing bedrock down ice from their sources.



Table 2: Summarized Statistics for Various Data Groupings (-74 µm fraction)

Total Sulfur (%) Copper (ppm) Nickel (ppm)

n min P5 P50 P95 max n min P5 P50 P95 max n min P5 P50 P95 max

Virginia Formation 5 0.02 0.03 0.13 0.24 0.26 5 40 54 120 230 240 5 80 82 110 128 130

Unit 1 Troctolite 12 0.01 0.01 0.06 0.33 0.53 12 30 30 110 933 1120 12 40 40 105 453 530

Other Troctolite 20 0.01 0.01 0.02 0.61 0.63 21 20 20 60 290 1510 21 30 30 60 190 470

Peat 3 0.01 0.02 0.15 0.56 0.61 3 20 35 170 251 260 3 40 42 60 123 130

Soil 7 0.02 0.02 0.06 0.14 0.15 7 30 33 110 213 240 7 50 56 90 127 130

Outwash 1 0.63 1 1510 1 470

Upper Till 17 0.01 0.01 0.01 0.11 0.18 18 20 29 50 205 290 18 30 30 50 139 190

Lower Till 7 0.04 0.04 0.07 0.23 0.17 7 40 55 110 618 780 7 40 58 120 330 390

Saturated Mineral 16 0.01 0.01 0.06 0.56 0.63 17 30 30 60 1198 1510 17 30 38 110 482 530

Unsaturated Mineral 11 0.01 0.01 0.02 0.11 0.13 11 20 25 70 155 190 11 30 35 70 115 120 \\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\Data\2008-10_Compiled_Data\[Compiled_Overburden_Data.1UP005.001.mc.20081021.xls]

Table 3: Summarized Statistics for MWMP Tests

Leachate pH Sulfate (mg/L) Copper (mg/L) Nickel (mg/L)

n min P5 P50 P95 max n min P5 P50 P95 max n min P5 P50 P95 max n min P5 P50 P95 Max

Virginia Formation 1 3.7 1 188 1 0.11 1 0.36

Unit 1 Troctolite 6 5.7 6.0 7.3 7.7 7.7 6 1.7 3.4 32 149 166 6 0.0043 0.0052 0.0086 0.061 0.072 6 0.00080 0.0054 0.021 0.065 0.076

Other Troctolite 7 3.4 4.1 6.9 7.8 8.1 7 3.4 3.8 21 189 230 7 0.0030 0.0036 0.0072 0.41 0.58 7 0.0014 0.0014 0.0032 2.1 3.0

Peat 2 6.8 6.9 7.5 8.0 8.1 2 68 70 81 92 93 2 0.0030 0.0034 0.0070 0.011 0.011 2 0.0015 0.0018 0.0041 0.0063 0.0066

Soil 2 5.7 5.7 6.3 6.8 6.9 2 3.4 4.4 14 23 24 2 0.0054 0.0087 0.039 0.069 0.072 2 0.0014 0.0024 0.012 0.021 0.022

Outwash 1 3.4 1 230 1 0.58 1 3.0

Upper Till 6 5.7 6.0 7.2 7.7 7.7 6 1.7 2.5 13 35 40 6 0.0050 0.0056 0.0086 0.025 0.028 6 0.00080 0.0013 0.0033 0.019 0.019

Lower Till 3 3.7 4.0 7.1 7.6 7.7 3 97 104 166 186 188 3 0.0043 0.0047 0.0080 0.10 0.11 3 0.032 0.0364 0.076 0.34 0.36

Saturated Inorganics 6 3.4 4.0 7.3 7.7 7.7 6 4.8 5.7 69 214 230 6 0.0043 0.0052 0.013 0.44 0.58 6 0.0032 0.0072 0.026 2.2 3.0

Unsaturated Inorganics 3 6.9 6.9 7.1 7.1 7.1 3 1.7 1.9 3.4 15 17 3 0.0050 0.0050 0.0054 0.0080 0.0083 3 0.00080 0.00086 0.0014 0.0031 0.0033 \\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\Data\2008-10_Compiled_Data\[Compiled_Overburden_Data.1UP005.001.mc.20081021.xls]



S Cu Ni% ppm ppm

Peat 0.01 20 40Upper till 0.01 24 36

S Cu Ni% ppm ppm

Soil 0.02 30 50Upper Till 0.01 58 62

S Cu Ni% ppm ppm

Soil 0.06 70 70Upper till 0.02 120 70

S Cu Ni% ppm ppm

Peat 0.15 170 130Upper till 0.18 290 130Outwash 0.63 1510 470Lower till 0.07 40 40

S Cu Ni% ppm ppm

Peat 0.61 260 60Upper till 0.06 40 40Lower till 0.05 110 120

S Cu Ni% ppm ppm

Soil 0.15 120 90Upper till 0.09 190 110S Cu Ni

% ppm ppmSoil 0.11 150 130Lower till 0.06 90 100

S Cu Ni% ppm ppm

Upper till 0.02 66 73

S Cu Ni% ppm ppm

Soil 0.02 40 80

S Cu Ni% ppm ppm

Lower till 0.04 100 190

S Cu Ni% ppm ppm

Upper till 0.01 30 40Lower till 0.17 780 390

S Cu Ni% ppm ppm

Soil 0.06 240 110Upper Till 0.03 38 44Lower Till 0.10 114 93

S Cu Ni% ppm ppm

Upper till 0.01 85 109

S Cu Ni% ppm ppm

Soil 0.13 110 120Lower till 0.26 240 130

Figure 5: Weighted Average Sulfur, Copper, and Nickel Concentrations (-74 µm fraction)



2.3.6 Glacial and Periglacial Deposition environment Different depositional environments are indicated by stratigraphic units in the overburden. Barr Engineering has interpreted two main glacial units (Upper and Lower Till). Outwash was intersected in one hole. Peat deposits are common in the project area and were specifically characterized. Thin mineral soils are also present although in some cases these were described as peat. In the comparative statistics in Table 2, samples indicated as “soil” reflect both peat and mineral soils. The three samples classified specifically as “peat” had the highest median total sulfur and nickel concentrations. MWMP leachates for the 2 peat samples tested had circum-neutral pH. One sample (from borehole RS-01B) had a typical sulfate concentration, and low copper and nickel concentrations. The second sample (from borehole RS-03) had slightly higher than typical sulfate concentrations and typical copper and nickel concentrations. Comparatively, Lower Till samples had higher median sulfur, copper and nickel concentrations than the Upper Till unit. MWMP leachate from one of the Lower Till samples (borehole RS-07) had one of the lowest pH values (3.7) and much higher than typical sulfate, copper, and nickel concentrations (188, 0.11, and 0.36 mg/L, respectively) (Table 3). Leachate from the other two Lower Till samples had circum-neutral pH and higher than typical sulfate, low to typical copper, and high nickel concentrations. MWMP leachates from six upper till samples had low to typical sulfate, copper, and nickel concentrations. The one intersection of “outwash” had the highest sulfur, copper and nickel concentrations in the database and leached elevated sulphate and low pH in the MWMP (Table 3).

2.3.7 Groundwater Level during Deposition The groundwater level during deposition of the glacial tills could not be evaluated and was not considered further.

2.3.8 Degree of Saturation Table 2 presents comparative statistics of total sulfur, copper and nickel concentrations for saturated and unsaturated mineral overburden. Peat is by definition saturated and is considered in Section 4.6. When comparing degree of saturation in mineral overburden, sulfur concentrations were greater in the saturated overburden (5th, 50th, and 95th percentile concentrations of 0.01, 0.06, and 0.56%, respectively). Unsaturated mineral overburden had 5th, 50th, and 95th percentile concentrations of 0.01, 0.02, and 0.11% respectively. Differences in metal concentrations were less apparent than for sulfur. Median copper concentrations were similar regardless of saturation though much higher copper concentrations were apparent at the extremes for saturated overburden. Similarly median nickel concentrations were only slightly greater in the saturated overburden though the difference was much greater at the extreme.

2.3.9 Effect of Oxidation-Reduction Conditions As discussed in Section 2, wide variations in oxidation-reduction conditions were observed in the overburden as indicated by ORP determinations in field rinse tests. ORP in general decreased with increasing depth implying a correlation with degree of saturation. In addition, indications of secondary sulfide minerals were recorded throughout the survey area in six drill holes, though the implied presence of secondary sulfide minerals did not always correlate with low ORP or necessarily elevated sulfur concentrations.



As noted previously, sulfur in general appeared to be more enriched in the fine fraction. The latter would not generally be expected if the sulfides originated from bedrock materials (or at least sulfur concentrations would be the same in the fine and coarse fractions). In general, sulfur concentrations showed a trend to increasing concentrations as ORP decreased (Figure 6) with one or two extreme values in boreholes RS11 and RS13. The sample from borehole RS13 indicated the presence of mineralized rock under saturated and reducing conditions (ORP-69 mV) and therefore the elevated sulfur concentrations in the fines may originate from bedrock rather than secondary sulfide precipitation although the presence of sulfur in the bedrock could contribute to conditions that produce secondary sulfides.

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2.3.10 Conclusions The data appear to indicate a vertical rather than a strong lateral variation in metal and sulfur concentrations in mineral overburden. The vertical effects appear as relatively higher sulfur and metal concentrations in the lower till rather than upper till units, and higher sulfur concentrations in chemically-reduced overburden. The two findings are not independent, however, because the lower till occurs deeper in the overburden profile where the overburden is saturated and chemically reducing conditions are observed.



Bedrock also exerts some control on sulfur and metal concentrations as indicated by relatively elevated though comparatively low median concentrations in overburden overlying the Virginia Formation and Unit 1 of the Duluth Complex, which is consistent with the sulfur content of the bedrock. However, elevated sulfur concentrations occur in the overburden overlying the other units of the Duluth Complex due to the vertical zoning effects.

2.4 Interpretation of Overburden Drilling Program Results

2.4.1 Possible Explanation for Vertical Zoning Sporadic elevated sulfur concentrations and the potential for leaching of acidity and metals from the overburden appears to be related to the development of vertical zoning caused by saturated and chemically-reducing conditions. Precipitation of secondary sulfides appears to have occurred in the overburden. The conditions necessary for this to occur include the presence of organic matter to act as a reductant and a source of sulfur to provide sulfide. The presence of peat in the project area indicates that dissolved organic matter may be entering groundwater. Sulfur most likely originates from reduction of sulfate to sulfide with the sulfate originating from the mineralized bedrock.

2.4.2 Management of Overburden The data indicate the need to consider selectively managing the deeper saturated overburden to address oxidation of secondary sulfides when exposed to atmospheric conditions during excavation. The current program indicates that secondary sulfides may occur throughout the project area and therefore that currently all deeper overburden should be managed to address the potential for leaching. Management of deep overburden separately would also address exposure of overburden containing mineralized rock overlying Virginia Formation and Unit 1 Troctolite. In contrast, near surface unsaturated till contains relatively low sulfur and metal concentrations and leached low concentrations of metals. Two management units are therefore recommended: Peat and unsaturated mineral overburden. Saturated mineral overburden.

2.4.3 Water Chemistry Contact water chemistry estimates have been specifically requested for the mineral overburden units in the excavation areas and stockpiles. The analysis of MWMP leachates provides an indicator of chemistry when stormwater comes into contact with exposed surfaces for example in excavations. In these situations, contact time is limited and the contact ratio (water to solid) is relatively high. Table 4 summarizes concentrations at the median, 95th percentile and maximum concentrations5. Generally, the 95th percentile values are recommended for exposed excavation faces to conservatively represent storm water since these are likely to represent the longest contact time with most soluble materials. Due to the lack of mineralization in the unsaturated overburden, contact water chemistry is expected to be dilute and similar to existing runoff in the project area. Qualitatively, the MWMP tests confirmed that these materials produce dilute contact waters containing low concentrations of major and trace elements.

5 Prior to complete interpretation of the data, the data were sorted using slightly different groups and provided to Barr Engineering to support RS74 (Draft 02). This version is attached as Appendix B for reference.



Components of the saturated mineral overburden are expected to contain elevated sulfur concentrations and may produce acidic leachate when exposed. The current testwork showed that only samples containing more than 0.2% sulfur produced acidic leachate between recovery by the drill program and testing in the laboratory; however, it is possible that with further exposure, other samples containing lower sulfur concentrations could produce acidity. Also, the extent of elevated sulfur concentrations in the saturated overburden is not known. The acidic pHs represented by the 95th and maximum values should therefore be applied to the component of water that comes into contact with these materials during excavation and exposure to oxidation. Application of MWMP results to estimation of seepage chemistry for an overburden stockpile needs to consider the disposal conditions and opportunity for water to contact the materials. Based on the current material balance, the only overburden stockpiles planned will be unsaturated overburden and peat stockpiles in the Overburden Storage and Laydown Area. Saturated overburden will mainly be placed within the temporary waste rock stockpiles for ultimate disposal in the backfilled East Pit. Therefore, the use of the 95th percentile contact chemistry would be warranted for the determination of the groundwater impact when comingled with the waste rock in the temporary stockpile without compaction to reduce water infiltration. However, if a saturated overburden stockpile is required in the future, the use of 95th percentile contact chemistry for the saturated overburden is not warranted if infiltration can be minimized using standard compaction techniques. If saturated overburden is stockpiled separately in the future, it is recommended that the median values for the saturated overburden be used as an estimate for water quality.



Table 4: Summary of MWMP Leachate Results By Material Type

pH Alk F Cl SO4 Al Sb As Ba Be B Cd Ca Cr Co Cu Fe Pb Mg Mn Mo Ni Se Ag Na Te Tl V Zn

Material mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

PEAT

P50 7.5 46 0.59 5.9 81 0.086 0.0006 0.0037 0.023 <0.0002 0.21 <0.00004 19 0.0004 0.0003 0.007 0.07 0.00009 9.3 0.13 0.019 0.0041 0.00075 0.00068 26 <0.0002 0.000045 0.0034 0.0015

P95 6.9 79 1 8.8 92 0.13 0.00069 0.0043 0.034 <0.0002 0.23 <0.00004 23 0.00094 0.00066 0.011 0.12 0.00022 11 0.19 0.028 0.0063 0.00089 0.0013 45 <0.0002 0.0001 0.0042 0.0038

Max 6.8 83 1.1 9.2 93 0.13 0.0007 0.0044 0.035 <0.0002 0.23 <0.00004 23 0.001 0.0007 0.011 0.12 0.00023 11 0.19 0.029 0.0066 0.0009 0.0014 47 <0.0002 0.00011 0.0043 0.004

SATURATED MINERAL OVERBURDEN

P50 7.3 13 0.33 2 69 0.14 0.0004 0.0023 0.011 <0.0002 0.027 0.000015 13 0.00005 0.0015 0.013 0.11 <0.00005 11 0.18 0.029 0.026 0.002 <0.00005 6.5 <0.0002 <0.00002 0.0011 0.003

P95 4 36 0.56 3.8 210 0.63 0.0012 0.0028 0.026 0.00055 0.087 0.005 26 0.0012 0.23 0.44 5.5 0.0011 18 1.1 0.034 2.2 0.0034 <0.00005 13 <0.0002 0.000025 0.0022 0.86

Max 3.4 38 0.6 4 230 0.74 0.0012 0.0028 0.028 0.0008 0.098 0.0066 27 0.0013 0.31 0.58 7.3 0.0014 18 1.3 0.034 3 0.0037 <0.00005 13 <0.0002 0.00004 0.0024 1.2

UNSATURATED MINERAL OVERBURDEN

P50 7.1 5 0.18 1.9 3.4 0.091 <0.0001 0.0005 0.0035 <0.0002 0.013 0.00005 3.9 <0.0002 0.0006 0.0054 0.05 <0.00005 2 0.051 0.0039 0.0014 <0.0002 <0.00005 3.7 <0.0002 <0.00002 0.0005 0.002

P95 6.9 12 0.45 3.4 15 0.3 0.00098 0.0029 0.013 <0.0002 0.028 0.00015 5.7 0.00097 0.0015 0.008 0.059 <0.00005 2.1 0.1 0.013 0.0031 0.00052 <0.00005 4.2 <0.0002 0.000025 0.00059 0.0056

Max 6.9 13 0.48 3.6 17 0.32 0.0011 0.0032 0.014 <0.0002 0.03 0.00016 5.9 0.0011 0.0016 0.0083 0.06 <0.00005 2.1 0.11 0.014 0.0033 0.0006 <0.00005 4.3 <0.0002 0.00003 0.0006 0.006

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3 2010 Sump Spoil Sampling and Analysis Program

3.1 Field Program

Sump excavation occurred as bedrock drilling progressed in the project area in January 2010. Each sump is roughly 8’ by 8’ and 5’ deep. The intent of this sampling effort was to collect additional samples of unsaturated overburden to further characterize the material for use in construction applications. The following sampling procedures were followed by Barr Engineering, as described in an email to MDNR and ERM dated February 26, 2010:

1. For sumps that had already been excavated and filled with drill cuttings but not yet closed (J020, J018, and the “central sump” located near MW-05-08), break up the frozen spoil pile with a spud bar to collect the sample (as described in step 5). Describe any remaining exposed sidewall, and describe the soil sampled, once a split of the samples has been thawed.

2. For sumps not already opened, excavate the sump by segregating bulk soils of different compositions or colors into individual spoil piles. Do not segregate individual layers unless a significant thickness (minimum of 2’) is observed, due to sample volume requirements and equipment inefficiencies at smaller scales. Document the depths each spoil pile came from (i.e., 0-3, 3-6, etc), and describe (color; texture [ASTM D2488]; moisture; mottling, if present; reaction with dilute HCl; magnetic properties) the sump profile.

3. Photograph sump profiles and spoil piles.

4. Record location using GPS.

5. Collect samples from the spoil piles at each sump, collecting about 4-5 gallons of soil per sample to provide sufficient samples for analysis.

6. Split the sample to keep about a half gallon of soil thawed for rinse testing and freeze the remaining sample for further analysis.

Sump locations are shown in Figure 7. A total of 13 samples were collected from nine locations as listed in Table 5. Table 5: Summary of Samples Collected

Location Depths Sampled

J007 0-3, 3-5

J008 0-3.5, 3.5-4.6

J012 0-3, 3-6

J013 Composite

J019 0-2

J024 0-2

J029 0-5

J037 0-3, 3-6

J107 Composite



Figure 7: Location of 2010 Sumps



3.2 Analytical Program

The analytical plan was provided to the MDNR by email on March 3, 2010.

3.2.1 Rinse Analysis Rinse analyses were performed by Barr personnel using a procedure provided by SRK. The procedure involves leaching a sub-sample screened to -5 mm at a liquid to solid ratio of 1:1 (roughly by weight). The resulting leachate is tested for pH and conductivity.

3.2.2 Laboratory Program At the laboratory, the following analyses were performed: A split of the whole sample was used to measure the particle size distribution using ASTM

method D422. A split of the whole sample was tested using the meteoric water mobility procedure (MWMP,

NDEP 19966). The -2 mm fraction was tested for acid-base account (Sobek et al 19787), moisture content,

element content by aqua regia digestion and element content by 1N nitric acid digestion. As described in the March 3, 2010 email, the 1N nitric acid digestion was proposed to evaluate reasonably labile methods as recommended by the Regional Technical Committee of the USDA (W 124, The Optimum Utilization of Sewage Sludge on Agricultural Land) (Pierce 19808).

3.3 Results

Laboratory reports are provided in Appendix C.

3.3.1 Field Observations and Rinse Tests Field observations are attached in Appendix C. All soil samples subsequently tested were described as “Dry”, “Dry to Moist” or “Moist” but none were saturated. Yellowish and brown soil colors were mostly indicative of oxidizing conditions. Three samples were olive brown. Rinse conductivities were very uniform and low (average 16 µS/cm, range 7 to 26 µS/cm). Rinse pHs averaged 6.7 with a range of 5.8 to 9.0. The low conductivities indicate that the deionized water was weakly modified by contact with the soils and as a result some rinse pHs were only marginally above the typical pH of the deionized water.

3.3.2 Laboratory Analysis Acid Base Accounting Acid-base accounting provide an indication of potential for acidic conditions to develop by determining acid potential from the reactive sulfur component, and acid neutralization potential. Results are provided in Table 6.

6 Nevada Division of Environmental Protection. 1996. Meteoric Water Mobility Procedure (MWMP) Standardized Column Test Procedure. NDEP publication MWMP.ltr. May 3 1996. 6p 7 Sobek A A, Schuller W A, Freeman J R, and Smith R M., 1978, Field and laboratory methods applicable to overburden and minesoils. USEPA Report No. 600/2-78-054, 203 pp. 8 Pierce, F.J. 1980. The content and distribution of Cd, Cr, Cu, Ni, Pb, and Zn in 16 selected Minnesota soil series. M.S. thesis, University of Minnesota, St. Paul, MN, USA. 140 p.



Paste pH, which is similar to rinse pH except the sample is crushed rather than sieved for analysis, showed similar pHs as the rinse test. Average pH was 6.4 and the range was 5.4 to 7.1. The total sulfur content of all samples was very low (average 0.02%, maximum 0.03%). These concentrations were very close to the detection limit of 0.01%. Sulfur likely occurs as trace levels of sulfate, sulfide and sulfur associated with carbonaceous matter. The “fizz test” showed no visible fizz with 10% hydrochloric acid and indicated low carbonate content, which was confirmed by carbonate analysis. Only one sample contained carbonate above the detection level of 0.2% CO2. Titrated total NP tended to be higher than the carbonate content due to acid buffering by non-carbonate minerals. These results indicated very low potential for acidic conditions to develop. These soils have very low reactivity from the standpoint of acid generation potential.

3.3.3 Element Content Element content determined following an aqua regia digestion indicated very uniform concentrations (Table 7) with the exception of one sample (J107). Coefficients of variation were below about 30% for the dataset excluding J107. This sample showed higher concentrations of some elements commonly associated with sulfide minerals, particularly copper (87 mg/kg) and nickel (80 mg/kg). Nickel and magnesium concentrations were strongly correlated in the dataset (Figure 8) suggesting a variable influence from oxidized mafic rocks which could include basaltic rocks and gabbro from the Duluth Complex.

0

10

20

30

40

50

60

70

80

90

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

Nic

ke

l (m

g/k

g)

Magnesium (%)

Y:\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[ePolymet Static Testing Apr 09 10 (May 28

Figure 8: Correlation of Magnesium and Nickel Concentrations for 2010 Overburden

Samples



Because the 1N nitric acid digestion required development by the laboratory, all tests were performed in duplicate to evaluate reproducibility. The laboratory analyzed the resulting leachates using two methods (ICP-ES and ICP-MS) to quantify concentrations for all parameters. Duplicate results were assessed with respect to a relative percent difference of 20% for results greater than 10 times the limit of detection. For the main parameters of interest, RPDs were outside this range for Cu (1 sample), Co (no samples) and nickel (5 samples). However, the highest RPD for these parameters was 33% and most were between 20 and 30%. Since this is a weak extraction, reproducibility is considered to be reasonable. Results were reported by the laboratory as concentration in leachates. For comparison with concentrations yielded by the aqua regia digestion, the leachate concentrations were converted to mg/kg by multiplying by 5 (for results reported in mg/L) and 0.005 (for results reported in µg/L). Like the results of the higher strength aqua regia digestion, concentrations were uniform (Table 8). For cobalt, copper and nickel, coefficients of variation were below 50%. The difference in extraction by aqua regia and 1N nitric acid were compared as percentages (Table 8). In all cases, nitric acid extracted less than aqua regia and differences in extraction could be attributed to mineral occurrence. Silicate minerals were the least soluble in nitric acid (though aqua reqia also incompletely dissolves silicates). Carbonates, secondary oxides and sulfides can all be expected to dissolve in both nitric and aqua regia to some degree. Major elements associated only with silicates (Na and K) showed the lowest extractions (4 and 6%, respectively). Major elements possibly associated with carbonates (Ca and Mg) showed higher extractions (26 and 16%, respectively). Aluminum and iron, which are likely associated with secondary oxides as well as silicates were more extractable than the alkali metals at 15% and 11%, respectively. Extractions of copper and nickel were higher than iron (19%, 13%) implying a greater association with oxide components compared to iron. The more extractable trace elements were cadmium (27%), cobalt (27%), lead (36%) and manganese (36%). Aqua regia and nitric acid extractable concentrations were not correlated. Notably, sample J107, which had elevated aqua regia digestible metals concentrations, showed relatively low nitric acid extractable concentrations along with sample J007 (0-3). Results from these tests were compared with results for the same procedure described by Pierce (1980) (Table 8) for Udept class soils. Concentrations determined for the NorthMet area soils were of the same order but consistently lower than those reported by Pierce (1980). A direct comparison of these datasets for soils from different areas analyzed by different laboratories should not be made but the results suggest that soils in the NorthMet area are not unusual in terms of weak acid extractability. MWMP leachate pHs were typically between 6 and 7 with the exception of 5.9 for J107 (Table 9). Leachate chemistry was dominated by sulfate, bicarbonate, calcium, sodium and magnesium but concentrations were very low. Median sulfate concentrations were 4.3 mg/L and the maximum 10 mg/L (for J107). Metal concentrations were very low. Median copper and nickel concentrations were 0.005 and 0.0007 mg/L respectively.

3.4 Comparison with Results of Overburden Drilling Program

Table 10 compares sulfur, copper and nickel concentrations in unsaturated overburden collected during the drilling program with those collected from sump spoils. Due to differences in the analytical programs, the comparison is between the calculated concentrations in -2 mm from analysis of the -2+0.074 mm and -0.074 mm fraction of drilling samples and the analyzed -2 mm fraction of the sump spoils. The range of sulfur concentration was very similar in both cases. Copper and nickel concentrations were slightly elevated for the drill hole samples. This may reflect a greater



influence from Duluth Complex rock at depth though the differences are small. The data support the conclusion that bulk characteristics of unsaturated overburden have been adequately characterized by these programs. Table 11 provides a similar comparison for leachable components of unsaturated overburden. The distribution of concentrations is very similar for the original small dataset of three samples and the 13 sump spoils samples. These results also indicate that the database of 16 samples has demonstrated the low leaching potential of unsaturated overburden throughout the site.

4 Conclusions

Two overburden characterization programs have shown:

Two overburden managements units (saturated; and unsaturated and peat) will classify excavated materials based on reactivity and leachability;

Saturated overburden has higher reactivity apparently due to the localized presence of secondary sulfide minerals; and

Unsaturated overburden consistently has low reactivity based on sulfur and metal content, and shows weak leachability when tested using MWMP.



Table 6: Acid-Base Accounting Results for Sump Spoil Samples

Sample ID Paste pH CO2 Total S Sulphate AP Sobek NP Net NP NP/AP Fizz Test

Std. Units % CO2 % S % S kg CaCO3/t kg CaCO3/t kg CaCO3/t Ratio Visual

LOD 0.01 0.2 0.01 0.01 #N/A 0.1 #N/A #N/A #N/A

Method Code Sobek C-GAS05 S-IR08 S-GRA06a Calc. Sobek NP Calc. Calc. Sobek

J007 (0-3) 5.44 <0.2 0.02 <0.01 0.6 5.1 4.5 8.2 None

J007 (3-5) 6.83 <0.2 0.01 <0.01 0.3 8.4 8.1 26.9 None

J008 (0-3.5) 6.23 <0.2 <0.01 <0.01 <0.3 8.9 8.9 29.7 None

J008 (3.5-4.6) 6.65 <0.2 0.02 0.01 0.3 8.8 8.5 28.2 None

J012 (0-3) 6.57 <0.2 0.01 0.01 <0.3 7.2 7.2 24.0 None

J012 (3-6) 6.89 <0.2 0.03 <0.01 0.9 7.3 6.4 7.8 None

J013 6.28 0.2 0.02 <0.01 0.6 7.8 7.2 12.5 None

J019 (0-2) 6.02 0.2 0.02 <0.01 0.6 5.2 4.6 8.3 None

J024 (0-2) 6.69 0.2 0.01 0.01 <0.3 7.3 7.3 24.3 None

J029 (0-5) 6.55 1.2 0.02 0.01 0.3 9.4 9.1 30.1 None

J037 (0-3) 6.05 0.2 0.01 0.01 <0.3 5.7 5.7 19.0 None

J037 (3-6) 7.10 0.2 0.01 0.01 <0.3 7.0 7.0 23.3 None

J1071 5.45 <0.2 0.02 0.01 0.3 4.3 4.0 13.8 None

Duplicates

J007 (0-3) 5.50 5.7 None \\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[ePolymet Static Testing Apr 09 10 (May 28 10)_1UP005001_ver00.xls]



Table 7: Metal Concentrations Determined Following Aqua Regia Digestion for Sump Spoil Samples

Sample ID Co Cu Mg Ni

ppm ppm % ppm

LOD 0.1 0.2 0.01 0.2

Method Code ME-MS41 ME-MS41 ME-MS41 ME-MS41

J007 (0-3) 12 24.5 0.61 42.9

J007 (3-5) 7.8 19.4 0.38 22.8

J008 (0-3.5) 11.2 25.4 0.57 36.6

J008 (3.5-4.6) 11.2 28 0.56 36.5

J012 (0-3) 8 28.2 0.39 23

J012 (3-6) 7.6 28.3 0.35 19.8

J013 8.5 20.1 0.44 25.8

J019 (0-2) 9.2 18.5 0.43 30.1

J024 (0-2) 8.6 20 0.39 25.1

J029 (0-5) 12.9 28.7 0.69 48.7

J037 (0-3) 8.5 23.1 0.34 25.4

J037 (3-6) 6.8 17.3 0.32 20.6

J107 15.5 86.7 0.77 79.9

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Table 8: Metal Concentrations Determined Following 1N Nitric Acid Extraction for Sump Spoil Samples

Sample ID Cd Cu Pb Zn Al Ca Co Fe K Mg Mn Na Ni

mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg mg/kg % mg/kg mg/kg mg/kg mg/kg

J007 (0-3) 0.01 0.5 1 2.0 0.06 0.01 2.8 0.05 -0.003 0.01 16 0.004 0.6

J007 (3-5) 0.01 5.5 1 3.3 0.20 0.16 2.5 0.32 0.006 0.09 226 0.003 5.1

J008 (0-3.5) 0.01 6.6 1 2.6 0.27 0.16 3.4 0.40 0.008 0.12 165 0.003 6.5

J008 (3.5-4.6) 0.01 8.0 1 2.9 0.25 0.17 3.3 0.36 0.007 0.12 199 0.003 7.5

J012 (0-3) 0.01 8.3 1 3.0 0.22 0.14 2.2 0.34 0.004 0.09 171 0.003 4.3

J012 (3-6) 0.01 8.6 1 3.5 0.18 0.15 2.1 0.33 0.007 0.09 163 0.003 4.0

J013 0.02 4.4 1 2.3 0.28 0.13 2.3 0.27 0.006 0.07 165 0.003 3.8

J019 (0-2) 0.01 4.5 1 1.4 0.43 0.11 2.0 0.41 0.003 0.05 79 0.004 2.4

J024 (0-2) 0.01 5.0 1 3.1 0.20 0.13 2.5 0.41 0.004 0.10 188 0.003 4.6

J029 (0-5) 0.02 6.7 1 2.8 0.39 0.14 3.2 0.34 0.007 0.11 127 0.004 6.7

J037 (0-3) 0.01 4.7 1 2.7 0.21 0.13 3.0 0.44 0.004 0.09 297 0.003 4.2

J037 (3-6) 0.02 4.5 1 4.0 0.16 0.16 2.2 0.32 0.006 0.10 195 0.003 4.4

J107 0.02 2.2 2 3.1 0.08 0.01 3.3 0.05 -0.003 0.01 14 0.004 1.0

Extraction Compared to Aqua Regia

J007 (0-3) 26% 2% 36% 5% 3% 2% 23% 1% -4% 1% 4% 5% 1%

J007 (3-5) 29% 28% 36% 14% 18% 35% 32% 12% 8% 24% 43% 5% 22%

J008 (0-3.5) 29% 26% 40% 9% 16% 34% 30% 13% 10% 20% 42% 4% 18%

J008 (3.5-4.6) 23% 29% 38% 9% 16% 31% 30% 11% 7% 21% 43% 3% 20%

J012 (0-3) 30% 29% 41% 13% 19% 36% 27% 13% 5% 23% 35% 5% 19%

J012 (3-6) 24% 30% 34% 14% 17% 37% 27% 12% 7% 25% 31% 4% 20%

J013 33% 22% 40% 9% 20% 29% 27% 11% 6% 15% 42% 4% 15%

J019 (0-2) 26% 24% 31% 3% 19% 16% 21% 16% 4% 11% 32% 3% 8%

J024 (0-2) 23% 25% 33% 13% 18% 34% 29% 14% 5% 25% 38% 4% 18%

J029 (0-5) 24% 23% 33% 9% 22% 21% 25% 11% 9% 16% 37% 3% 14%

J037 (0-3) 27% 20% 36% 13% 18% 32% 35% 18% 6% 26% 59% 5% 17%

J037 (3-6) 29% 26% 29% 18% 18% 36% 33% 13% 7% 31% 44% 5% 21%

J107 27% 3% 36% 7% 4% 2% 21% 1% -4% 1% 4% 7% 1%

Udept Soils (n=15, Pierce 1980)

Average 0.07 11 2.3 12.6 - - - - - - - - 8.9

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Table 9: MWMP Results for Sump Spoil Samples

Sample ID pH F SO4 Al Sb As Ba Be B Cd Ca Cr Co Cu Fe Pb Mg Mn Hg Mo Ni K Se Ag Na Tl V Zn

mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L ug/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

J007 (0-3) 6.52 0.04 5 0.0815 0.00005 0.00036 0.00129 0.00002 -0.05 0.000007 1.57 0.0003 0.000295 0.00513 0.015 0.000211 0.54 0.0133 0.02 -0.00005 0.00041 0.14 0.00019 -0.000005 1.98 0.000011 0.0006 0.0016

J007 (3-5) 6.75 0.07 1.6 0.141 0.00005 0.00037 0.00212 0.00002 -0.05 -0.000005 1.35 0.0004 0.000191 0.00468 0.133 0.000125 0.49 0.00452 0.02 0.00007 0.00067 0.12 0.00013 -0.000005 1.66 0.000003 0.0009 0.0009

J008 (0-3.5) 6.58 0.03 1.1 0.257 0.00005 0.00052 0.0024 0.00004 -0.05 0.000005 2.58 0.0008 0.000242 0.0069 0.143 0.000051 0.57 0.00656 0.02 0.00012 0.00093 0.53 0.0003 0.000008 1.25 0.000005 0.0008 0.0007

J008 (3.5-4.6) 6.62 0.03 0.8 0.201 0.00006 0.00057 0.00184 0.00005 -0.05 -0.000005 2.35 0.0008 0.000212 0.00759 0.127 0.000044 0.56 0.00597 0.02 0.00009 0.00113 0.26 0.00024 0.000008 1.65 0.000003 0.0009 0.0006

J012 (0-3) 6.74 0.05 4.8 0.049 0.00004 0.00026 0.00104 0.00001 -0.05 -0.000005 1.64 0.0004 0.000128 0.00437 0.035 0.000036 0.71 0.00344 0.01 -0.00005 0.00064 0.11 0.00015 -0.000005 2.23 -0.000002 0.0004 0.0008

J012 (3-6) 6.9 0.07 5.3 0.205 0.00004 0.00039 0.00334 0.00002 -0.05 -0.000005 1.82 0.0006 0.00017 0.00367 0.239 0.000114 0.82 0.00722 0.01 0.00006 0.00073 0.22 0.00008 -0.000005 2.01 -0.000002 0.001 0.0011

J013 6.53 0.02 -0.5 0.559 0.00006 0.00053 0.00147 0.00007 -0.05 0.000013 3.01 0.0015 0.000293 0.00622 0.179 0.000043 0.68 0.014 0.02 0.00006 0.00113 0.27 0.0004 0.000014 1.62 0.000004 0.0006 0.0019

J019 (0-2) 6.49 0.03 7.4 0.215 0.00006 0.00039 0.00061 0.00003 -0.05 -0.000005 4.07 0.0011 0.000296 0.00683 0.177 0.000034 1.4 0.0033 0.02 -0.00005 0.00035 -0.05 0.00031 0.000007 1.94 0.000004 0.001 0.0011

J024 (0-2) 6.49 0.06 4.3 0.0297 0.00002 0.00022 0.00079 -0.00001 -0.05 -0.000005 1.82 -0.0001 0.000123 0.00398 0.033 0.000074 0.68 0.0051 -0.01 -0.00005 0.00042 0.09 0.00014 -0.000005 1.52 -0.000002 0.0003 0.0012

J029 (0-5) 6.62 0.02 2.8 0.0778 0.00004 0.00026 0.00117 0.00001 -0.05 0.000012 4.46 0.0002 0.00019 0.00643 0.027 0.000006 0.99 0.00475 0.01 0.00012 0.00037 0.37 0.00019 -0.000005 1.95 0.000002 0.0004 0.0015

J037 (0-3) 6.25 0.05 4.4 0.0973 0.00004 0.00024 0.00142 0.00002 -0.05 -0.000005 1.34 0.0014 0.000129 0.0036 0.081 0.000026 0.65 0.0155 0.01 -0.00005 0.00111 0.09 0.00026 -0.000005 1.65 0.000003 0.0003 0.001

J037 (3-6) 6.42 0.13 2.1 0.139 0.00007 0.00043 0.00212 0.00002 -0.05 -0.000005 1.15 0.0014 0.000127 0.00519 0.152 0.000152 0.67 0.00687 0.01 0.00011 0.00116 0.15 0.00019 -0.000005 1.67 0.000002 0.0012 0.001

J107 5.85 0.01 10 0.0284 0.00002 0.0002 0.00402 -0.00001 -0.05 0.000026 2.13 -0.0001 0.00036 0.00221 0.004 0.000038 0.93 0.0601 -0.01 -0.00005 0.00308 0.84 0.00046 -0.000005 2.14 0.000008 0.0002 0.0018

\\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[ePolymet Static Testing Apr 09 10 (May 28 10)_1UP005001_ver00.xls]



Table 10: Comparison of Sulfur, Nickel and Copper Content of Unsaturated Overburden

Total Sulfur (%) Copper (ppm) Nickel (ppm)

n min P5 P50 P95 max n min P5 P50 P95 max n min P5 P50 P95 max

Drilling Samples 11 0.01 0.01 0.01 0.03 0.03 11 20 20 31 104 126 11 17 18 50 71 72

Sump Spoils 13 0.01 0.01 0.02 0.03 0.03 13 17 18 25 52 89 13 20 20 26 46 80

\\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[Calc-2mm_1UP005001_SJD_VER00.xlsx] \\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[ePolymet Static Testing Apr 09 10 (May 28 10)_1UP005001_ver00.xls]

Table 11: Comparison of Sulfate, Nickel and Copper Concentrations in MWMP Leachates from Unsaturated Overburden

\\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\Data\2008-10_Compiled_Data\[Compiled_Overburden_Data.1UP005.001.mc.20081021.xls] \\Van-svr0.van.na.srk.ad\ge_projects\PolyMet Mining\1UP005.01_Northmet_project_2004\Testwork\Overburden\2010-07_Report\Interpretations\[ePolymet Static Testing Apr 09 10 (May 28 10)_1UP005001_ver00.xls]

Sulfate (mg/L) Copper (mg/L) Nickel (mg/L)

n P50 P95 max n P50 P95 max n P50 P95 max

Drilling Samples 3 3.4 15 17 11 0.005 0.008 0.008 11 0.001 0.003 0.003

Sump Spoils 13 4.3 8.4 10 13 0.005 0.007 0.008 13 0.0007 0.002 0.003

Appendix A Drill Hole Overburden Geochemical Data

Results of Analysis from Overburden Drilling Program - Appendix A Page 1 of 13

Fraction Analyzed Whole Sample Whole Sample Whole Sample Whole Sample Whole Sample Whole Sample -5 mm -5 mm -5 mm Whole Sample -74 µm -74 µm -74 µm -74 µm -74 µm

Parameter Depth Depth Stratigraphic Unit Saturated Oxidized Texture Sulfides Other pHSpecific

Conductivity ORP

Moisture

ContentTotal C CO2

Total

SulphurSulphate MPA

Units From (ft) To (ft) (μS/cm) mV % % C % CO2 % S % S kgCaCO3/t oreDetection Limit 0.01 0.2 0.01 0.01 0.3General Method Field Observation Field Observation Field Observation Field Observation Field Observation Field Observation Rinse Test Rinse Test Rinse Test ABA ABA ABA ABA ABAAnalytical Method Code C-IR07 C-GAS05 S-IR08 S-GRA06a OA-VOL08RS-01B 0 1 Peat Peat 7.05 24 248.1 39 <0.2 0.01 <0.01 2.8RS-01B 1 5 Upper till N Y Sand 5.86 10 256.9 4.7 <0.2 0.01 0.01 0.3RS-01B 14 15 Upper till Y Y Sand 6.37 16 223.7 5.7 <0.2 0.01 0.01 <0.3RS-01B 18 20 Upper till Y N Sand 7.28 34 65.6 7.8 <0.2 0.01 <0.01 0.3RS-01B 20 25 Lower till, Bedrock at 20.5ft 8.79 66 -40 9.1RS-03 5 10 Peat Peat 5.17 116 65 65 NSS* 0.61 NSS* NSS*RS-03 15 20 Upper till Y N Sand 7.4 50 -208.7 4.3 <0.2 0.06 0.01 1.9RS-03 20 22 Lower till, Bedrock at 22ft Y N Gravel 9.42 63 -200 5.8 0.3 0.05 0.02 1.6RS-04 1 5 Soil Y Y Silt 5.77 22 124.3 12 <0.2 0.06 0.01 1.9RS-04 10 15 Upper till Y Y Sand 6.33 25 104.5 3.8 <0.2 0.01 0.02 0.3RS-04 15 20 Upper till (15-18ft), Lower till (18-25ft) Y N Sand Secondary 6.74 25 -90 7.4 0.2 0.05 <0.01 1.6RS-04 20 25 Lower till, Bedrock at 25ft Y N Sand Secondary 7.83 17 -89.6 4.7 0.3 0.12 <0.01 3.8RS-05A 5 10 Upper till mixed mixed mixed 6.55 22 88.7 6.5 <0.2 0.01 0.04 0.3RS-05A 10 13 Upper till, Bedrock at 13ft Y N Gravel 8.9 88 -70 2.5 <0.2 0.01 0.01 0.3RS-06A 0.5 2 Soil N Y Sand 4.84 5 313 6.8 0.2 0.02 0.01 0.6RS-06A 2 4 Upper till N Y Sand 4.99 11 279 8.1RS-06A 5 7.5 Upper till N Y Sand 5.82 12 264.4 9.5 <0.2 0.01 <0.01 0.3RS-06A 7.5 10 Upper till N Y Sand 6.32 17 251 4.3RS-06A 15 19 Upper till Y N Sand Secondary 6.75 18 38 9.5 <0.2 0.01 <0.01 0.3RS-06A 19 21 Upper till, Bedrock at 21ft Y N Sand Secondary 7.86 20 18 9.1RS-07 1 2 Soil N Y Sand 5.61 45 97.8 15 <0.2 0.13 <0.01 4.1RS-07 2 3 Soil N Y Sand 13RS-07 3 5 Upper till N Y Sand 6.1 52 27 9.4RS-07 5 6 Upper till N Y Sand 6.1 52 27 4.2RS-07 6 10 Lower till 6.4 17 60 5.8RS-07R 10 12 Lower till (10-11ft), Bedrock (11-12ft) 5.0RS-07R 13.5 14.5 Bedrock Y N Gravel 7.48 82 7.0RS-07/RS-07R 6 14.5 Lower till <0.2 0.26 0.01 8.1RS-08A 0 1 Soil N N Sand 15 <0.2 0.06 <0.01 1.9RS-08A 1 5 Upper till N N Sand 5.18 19 287.6 6.7RS-08A 5 11 Upper till N N Sand Secondary 5.78 22 217.4 6.4 <0.2 0.02 0.05 0.6RS-09 7 8 Lower till, Bedrock at 8ft Y N Silt Secondary 5.88 2 182 11 <0.2 0.04 0.03 1.3RS-10 1 2 Upper till N Y Sand 12 <0.2 0.03 0.02 0.9RS-10 2 3 Upper till N Y Sand 6.07 30 193 9.8RS-10 3 5.5 Upper till N Y Sand 5.73 12 241.6 9.5RS-10 5.5 7.5 Upper till Cement 7.08 20 60.2 6.2 <0.2 0.02 0.01 0.6RS-10 7.5 10 Upper till N N Gravel 6.81 30 152.3 4.4 <0.2 0.02 <0.01 0.6RS-10 10 14 Upper till N N Gravel Cement 6.5 26 145.3 28RS-11 0 9.5 Peat Peat 5.89 40 107.1 33 <0.2 0.15 <0.01 4.7RS-11 11.5 17 Upper till Y N Sand Secondary 6.47 47 -61.4 9.3 <0.2 0.18 <0.01 5.6RS-11 17 25 Outwash Y N Gravel Secondary 6.56 30 -37.5 6.3 <0.2 0.63 0.02 19.7RS-11 28 31 Lower till Y N Sand 6.5 70 -49.7 5.9 0.4 0.07 <0.01 2.2RS-11 31 33 Lower till, Bedrock at 33ft Y N Sand 4.7RS-12 7 9 Upper till N Y Sand Mineral'd Rock 7.17 33 111.7 6.9 0.4 0.01 0.01 0.3RS-12 16 18 Upper till Y Y Sand 7.14 14 44 10 <0.2 0.01 0.01 0.3RS-12 20 22 Lower till, Bedrock at 22ft Y N Sand Mineral'd Rock 5.3 <0.2 0.17 0.02 5.3RS-13 0 1.5 Soil peat 6.15 42 62.7 29 <0.2 0.11 0.02 3.4RS-13 1.5 2.5 Lower till Sand 15 <0.2 0.06 <0.01 1.9RS-13 2.5 6 Lower till Sand 6.07 27 106.6 5.2RS-13 8 10 Bedrock Y N Gravel Mineral'd Rock 7.2 46 -68.7 4.1 <0.2 0.53 0.05 16.6RS-14B 0 1.5 Soil Peat 26 <0.2 0.15 <0.01 4.7RS-14B 1.5 3 Upper till N Y Sand 5.41 19 239 16 <0.2 0.09 <0.01 2.8RS-14B 3 5 Upper till, Bedrock at 5ft N Y Sand 6.3RS-16B 0 2 Soil N Y Sand 5.29 8 290 22 <0.2 0.02 <0.01 0.6

SRK ConsultingOctober 2008 Appendix A_Overburden Data.1UP005.001.mc.20081020.xls


Fraction Analyzed

Parameter Depth Depth

Units From (ft) To (ft)Detection Limit

General Method

Analytical Method Code

RS-01B 0 1RS-01B 1 5RS-01B 14 15RS-01B 18 20RS-01B 20 25RS-03 5 10RS-03 15 20RS-03 20 22RS-04 1 5RS-04 10 15RS-04 15 20RS-04 20 25RS-05A 5 10RS-05A 10 13RS-06A 0.5 2RS-06A 2 4RS-06A 5 7.5RS-06A 7.5 10RS-06A 15 19RS-06A 19 21RS-07 1 2RS-07 2 3RS-07 3 5RS-07 5 6RS-07 6 10RS-07R 10 12RS-07R 13.5 14.5RS-07/RS-07R 6 14.5RS-08A 0 1RS-08A 1 5RS-08A 5 11RS-09 7 8RS-10 1 2RS-10 2 3RS-10 3 5.5RS-10 5.5 7.5RS-10 7.5 10RS-10 10 14RS-11 0 9.5RS-11 11.5 17RS-11 17 25RS-11 28 31RS-11 31 33RS-12 7 9RS-12 16 18RS-12 20 22RS-13 0 1.5RS-13 1.5 2.5RS-13 2.5 6RS-13 8 10RS-14B 0 1.5RS-14B 1.5 3RS-14B 3 5RS-16B 0 2

-74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm

NP Fizz Rating Ag Al As Au B Ba Be Bi Ca Cd Ce Co Cr Cs Cu

kgCaCO3/t ore Unity ppm % ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm1 1 0.01 0.01 0.1 0.2 10 10 0.05 0.01 0.01 0.01 0.02 0.1 1 0.05 0.2

ABA ABA Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua RegiaOA-VOL08 OA-VOL08 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41

5 1 4.73 1.29 6.7 <0.2 <10 140 0.43 0.21 0.43 0.54 23.5 8 36 1.21 28.32 1 1.05 1.19 6 <0.2 <10 40 0.4 0.07 0.39 0.09 50.7 7.6 38 1.06 25.25 1 0.63 0.9 5.5 <0.2 <10 40 0.34 0.07 0.55 0.09 40.8 7 36 1.1 31.2

13 1 9.98 1.24 4.5 <0.2 <10 40 0.36 0.08 0.83 0.08 40.5 9.6 47 1 38.8

NSS* NSS* 0.54 0.82 5.3 <0.2 <10 60 0.41 0.1 1.19 0.45 30.2 5 46 0.58 26415 1 0.08 0.74 4.7 <0.2 <10 40 0.24 0.25 0.77 0.11 35.8 6.6 32 0.69 37.320 1 5.76 1.79 2.2 <0.2 <10 50 0.23 0.27 1.23 0.13 33.5 22.6 41 1.14 1206 1 0.55 2.45 7.9 <0.2 <10 80 0.45 0.2 0.53 0.12 50.6 17 62 1.98 2407 1 1.22 0.8 2.6 <0.2 <10 40 0.25 0.06 0.59 0.08 47.4 8.2 37 0.71 36.5

12 1 1.92 0.76 1.5 <0.2 <10 20 0.19 0.06 0.66 0.07 41.6 7.9 33 0.84 53.513 1 1.87 1.01 3 <0.2 <10 30 0.28 0.07 0.75 0.12 36.5 14.9 37 1.17 14417 1 0.08 1.64 5.8 <0.2 <10 70 0.43 0.14 0.5 0.12 54.4 14.5 57 1.87 1066 1 0.03 4.47 1.9 <0.2 <10 50 0.23 0.05 2.43 0.1 17.95 38.5 80 0.76 59.40 1 0.17 2.16 4 <0.2 <10 90 0.48 0.09 0.33 0.1 52.4 12.3 46 1.6 31.9

6 1 0.54 1.46 4.6 <0.2 <10 60 0.41 0.08 0.53 0.05 50.3 9.6 50 1.16 42.1

6 1 0.25 1.05 6.8 <0.2 <10 50 0.32 0.07 0.58 0.1 50.4 11.7 43 1.08 44.6

-2 1 0.04 3.04 9.6 <0.2 <10 110 0.81 0.16 0.31 0.11 40.9 14.7 101 3.75 115

12 1 0.25 2.5 15.3 <0.2 <10 110 0.85 0.27 0.48 0.52 56.7 25.2 99 4.13 2394 1 0.16 2.9 8.5 <0.2 <10 70 0.67 0.1 0.35 0.09 45.3 15 59 2.08 70.8

7 1 0.58 1.53 11.7 <0.2 <10 60 0.43 0.09 0.58 0.19 49.6 19.2 53 2.24 123.523 1 0.07 4.83 5 <0.2 <10 80 0.54 0.08 2.41 0.17 35.1 34.2 89 2.41 107.52 1 0.07 2.67 4 <0.2 <10 110 0.52 0.13 0.31 0.07 42.1 14 56 2.26 39.1

9 1 0.05 1.88 4.8 <0.2 <10 90 0.49 0.12 0.55 0.06 57.6 12.7 68 3.52 53.411 1 0.05 2.57 9.7 <0.2 <10 100 0.59 0.11 0.65 0.14 47.1 20.5 85 4.27 88.3

3 1 1.65 2.48 4.5 <0.2 <10 90 0.68 0.16 0.75 0.4 40.8 18.2 110 2.74 166.514 1 0.24 2.62 10.7 <0.2 <10 100 0.89 0.25 0.68 0.31 54.9 21.5 107 3.62 3074 1 27.4 3.09 20.9 <0.2 <10 100 0.77 0.46 0.87 0.6 41.9 41.2 102 4.44 15602 1 1.09 1.01 5 <0.2 <10 50 0.31 0.07 0.82 0.13 46.4 9.1 46 1.38 46.1

17 1 0.01 1.04 5.3 <0.2 <10 50 0.36 0.07 0.67 0.08 54 8.5 35 1.15 34.311 1 0.01 0.85 5.6 <0.2 <10 40 0.36 0.09 0.47 0.13 53.1 7.6 33 1.02 32.25 1 0.25 1.97 10 <0.2 <10 50 0.33 0.19 1.04 0.18 43.5 43.9 47 1.18 775

19 1 0.11 2.47 4.4 <0.2 <10 60 0.54 0.08 0.61 0.18 35.3 21.9 63 1.22 146.56 1 0.1 2.67 7.2 <0.2 <10 120 0.55 0.06 0.39 0.08 58.9 19.9 90 4.21 88.1

6 1 0.49 2.69 20.7 <0.2 <10 90 0.54 0.25 1.02 0.39 46.3 67.2 72 2.4 11551 1 0.17 2.37 5.4 <0.2 <10 100 0.44 0.14 0.28 0.2 23 12 51 1.63 86.53 1 0.22 3 6.4 <0.2 <10 80 0.71 0.11 0.33 0.13 45.6 19.2 63 2.29 180.5

0 1 0.1 3.71 7 <0.2 <10 90 0.75 0.09 0.24 0.15 42.5 16.7 67 1.41 29.4



Fraction Analyzed



General Method




Fe Ga Ge Hf Hg In K La Li Mg Mn Mo Na Nb Ni P Pb

% ppm ppm ppm ppm ppm % ppm ppm % ppm ppm % ppm ppm ppm ppm0.01 0.05 0.05 0.02 0.01 0.005 0.01 0.2 0.1 0.01 5 0.05 0.01 0.05 0.2 10 0.2

Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua RegiaME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41

2.9 6.01 <0.05 <0.02 0.08 0.024 0.09 9.6 6.7 0.21 1550 1.51 0.02 1.02 24.4 1120 21.83.33 4.02 0.09 0.12 0.02 0.013 0.07 20.1 6 0.31 574 0.69 0.04 0.93 22.6 870 5.43.3 3.73 0.08 0.3 0.01 0.013 0.08 19.9 6.6 0.37 469 0.57 0.06 0.25 20.9 900 5.93.02 4.45 <0.05 0.32 0.01 0.013 0.11 19.1 7 0.6 465 0.67 0.16 0.21 32 810 4

2.13 2.53 <0.05 0.07 0.12 0.013 0.04 17.3 4.3 0.3 179 12.1 0.03 0.91 60.5 580 6.52.18 3.06 0.08 0.3 0.01 0.011 0.1 17 7.8 0.43 211 0.62 0.05 0.41 28 880 4.13.65 5.19 <0.05 0.25 0.01 0.012 0.15 15.3 10 1.54 392 1.57 0.25 0.38 104 770 3.54.12 8.02 <0.05 0.13 0.02 0.029 0.11 23.6 15.3 0.66 386 1.44 0.04 1.61 104 860 6.72.43 3.4 <0.05 0.25 0.01 0.01 0.08 21 8.1 0.36 255 0.9 0.05 0.56 31 1010 4.41.94 3.15 <0.05 0.33 0.01 0.012 0.08 18.4 7.5 0.42 183 0.64 0.06 0.41 37 960 3.82.7 3.7 <0.05 0.31 0.01 0.012 0.1 16.7 9.5 0.72 233 0.97 0.08 0.29 88.4 880 43.29 5.88 <0.05 0.28 0.02 0.021 0.17 25.4 13.1 0.56 339 1.14 0.04 0.5 58.9 880 5.24.13 9.24 <0.05 0.08 0.01 0.011 0.13 9 9.3 2.64 501 2.88 0.62 0.18 170 370 2.62.95 6.81 <0.05 0.11 0.03 0.023 0.12 18.8 17.6 0.45 303 0.79 0.02 1.93 36.6 1240 6.1

3.01 5.26 <0.05 0.27 0.01 0.018 0.1 25.1 11.2 0.5 253 0.78 0.05 0.49 31.9 880 4.4

2.86 4.25 <0.05 0.34 0.01 0.014 0.13 23.3 9.9 0.46 332 1.1 0.05 0.38 33.6 1000 4.5

5.23 12.4 <0.05 0.16 0.02 0.038 0.27 18.4 55.3 0.92 212 2.88 0.02 4.38 109.5 940 5.7

6.42 9.13 0.15 0.32 0.03 0.045 0.51 25 32.7 1.01 289 4.77 0.06 1.62 118 1130 6.73.87 8.35 <0.05 0.14 0.06 0.028 0.12 19.9 20.4 0.53 232 1.34 0.03 2.74 62.6 620 5.8

3.84 5.52 0.09 0.36 0.03 0.022 0.23 22.5 14.4 0.68 385 1.25 0.06 0.34 66.9 920 4.25.33 10.7 0.08 0.22 0.02 0.024 0.31 15.5 17.1 2.36 509 7.75 0.59 0.4 178.5 500 3.73.12 8.92 <0.05 0.1 0.04 0.025 0.17 17.5 25 0.49 302 1.56 0.03 2.38 57.2 580 6.6

3.52 7.67 0.09 0.49 0.01 0.021 0.46 27.7 29.2 0.92 369 1.16 0.03 0.46 38.3 1320 4.25.78 8.57 0.18 0.48 0.01 0.031 0.54 22.4 22.3 1.12 423 1.44 0.09 0.28 85.1 820 7.6

3.01 8.34 0.1 0.22 0.03 0.035 0.29 19 26.4 0.93 227 1.45 0.09 2.77 102 740 6.44.64 9.4 0.13 0.4 0.02 0.056 0.35 25.4 29 1.12 241 3.64 0.09 2.27 115.5 830 8.89.75 9.8 0.31 0.47 0.03 0.071 0.52 20.3 36.3 1.83 358 5.44 0.11 1.11 444 920 9.33.71 4.24 0.06 0.38 0.01 0.016 0.23 20.7 14.4 0.61 285 1.1 0.06 0.42 30.3 1010 3.8

2.68 4 0.05 0.34 0.01 0.013 0.11 26.7 10 0.45 332 0.55 0.03 0.38 24.5 1110 4.32.58 3.21 0.06 0.29 0.01 0.014 0.09 22.2 8.3 0.28 290 0.84 0.03 0.39 24 1060 4.14.51 5.52 0.09 0.26 0.02 0.028 0.16 19.7 9.9 1.43 447 2.62 0.2 0.35 374 1000 4.63.74 6.85 <0.05 0.08 0.05 0.026 0.09 13.9 16 0.59 688 2.02 0.07 2.02 108.5 790 6.64.23 8.59 0.05 0.29 0.02 0.029 0.56 23.7 23 0.98 413 1.1 0.04 2.25 84.4 820 4.2

5.68 7.77 0.1 0.28 0.02 0.033 0.3 20.5 19 0.78 412 5.04 0.18 0.82 517 880 5.73.56 6.6 <0.05 0.03 0.08 0.025 0.11 9.2 15.5 0.41 400 1.23 0.02 1.7 59.1 610 13.83.88 8.65 <0.05 0.09 0.06 0.029 0.2 17.7 24.2 0.62 327 1.65 0.04 2.42 94.6 670 5.6

4.02 8.8 <0.05 0.11 0.05 0.031 0.06 12.2 14.4 0.57 277 1.06 0.03 2.04 62.2 920 6.7



Fraction Analyzed



General Method




Rb Re S Sb Sc Se Sn Sr Ta Te Th Ti Tl U V W Y

ppm ppm % ppm ppm ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm0.1 0.001 0.01 0.05 0.1 0.2 0.2 0.2 0.01 0.01 0.2 0.005 0.02 0.05 1 0.05 0.05

Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua Regia Aqua RegiaME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41

14.7 <0.001 0.05 0.19 1.9 0.6 1.7 29.3 <0.01 0.03 0.7 0.061 0.09 0.44 56 1.68 2.58.5 <0.001 0.02 0.05 3.6 0.4 0.6 26.1 <0.01 0.01 5 0.099 0.06 0.74 51 0.35 6.28.6 <0.001 0.02 0.08 4.2 0.3 0.6 31 <0.01 0.01 4.6 0.104 0.06 0.68 50 0.32 7.648.8 <0.001 0.03 0.08 3.7 0.3 1.4 42 <0.01 0.01 4.5 0.106 0.07 0.67 46 1.66 7.43

4.1 0.011 0.46 0.35 3.3 2.8 1.2 48.5 0.01 0.03 6.6 0.035 0.06 3.47 31 3.81 8.457.7 0.001 0.07 0.14 2.6 0.4 0.4 30.2 <0.01 0.02 3.6 0.096 0.06 0.95 44 0.3 6.969.7 <0.001 0.05 0.17 3.7 1.6 1.1 54.9 0.01 0.02 3.7 0.12 0.08 1.05 43 2.82 6.716.5 <0.001 0.01 0.24 7 0.6 0.8 29 <0.01 0.03 5 0.137 0.16 1.56 80 0.3 10.67.2 <0.001 0.01 0.11 3 0.5 0.6 30 <0.01 0.01 5.2 0.107 0.06 0.9 46 0.62 7.826.3 <0.001 0.05 0.07 2.7 0.3 0.6 30.1 <0.01 0.01 4.9 0.106 0.05 1.25 43 0.91 7.487.9 0.002 0.12 0.12 3.6 0.4 0.6 30.5 <0.01 0.02 4.3 0.103 0.08 1.26 46 0.57 7.1821.8 <0.001 <0.01 0.24 6.4 0.4 0.8 29.1 <0.01 0.03 6 0.141 0.18 1.43 64 1.31 10.7

7 0.001 <0.01 0.08 3.7 0.3 0.5 114 <0.01 0.01 1.8 0.067 0.06 0.48 25 0.79 3.7916.7 <0.001 0.01 0.13 4 0.7 0.7 22.3 <0.01 0.02 4.8 0.121 0.13 0.97 65 0.34 5.87

11.4 <0.001 <0.01 0.14 5.4 0.5 0.7 35.3 <0.01 0.02 5.2 0.129 0.11 1.12 58 1.41 10.15

13 <0.001 <0.01 0.14 4.1 0.3 0.6 31.7 <0.01 0.02 5.5 0.119 0.1 1.01 51 0.68 8.58

36.3 0.001 0.04 0.25 9.1 1 1 18.3 <0.01 0.03 5.3 0.221 0.2 1.76 97 0.71 7.18

44.4 0.002 0.27 0.72 10.8 1.3 0.9 26 0.01 0.05 6.5 0.197 0.4 3.5 104 6.67 14.619.2 <0.001 0.02 0.21 5.6 1.1 0.8 25.3 <0.01 0.04 4.4 0.143 0.16 1.22 69 0.39 7.86

24.8 <0.001 0.01 0.31 5.4 0.4 0.7 32.7 0.01 0.02 5.4 0.14 0.19 1.37 58 11.95 8.9921.1 0.001 0.03 0.27 6.4 0.4 0.8 113.5 0.01 0.03 4 0.129 0.19 1.62 50 1.58 7.2623.2 <0.001 0.01 0.15 4.8 0.7 1 24.3 <0.01 0.02 5.4 0.131 0.15 1.14 72 3.37 5.67

38.3 <0.001 0.01 0.29 7.5 0.5 0.8 30.3 <0.01 0.03 6.6 0.189 0.29 1.82 72 0.71 9.4446.5 <0.001 0.01 0.42 9.1 0.4 0.8 36.2 <0.01 0.03 5.7 0.192 0.33 1.92 74 1.96 10

27.9 0.001 0.07 0.59 8.4 1.1 1 30.9 <0.01 0.04 4.7 0.191 0.26 2.66 102 1.52 9.9437.1 0.002 0.19 1.01 10.7 1.5 1 29.9 0.01 0.05 6 0.223 0.32 4.54 130 0.7 13.3543.7 0.006 0.65 1.68 10.4 3.3 3.5 36.9 <0.01 0.14 5.5 0.205 0.4 4.46 95 4.87 13.4516.3 <0.001 0.09 0.18 3.9 0.4 0.7 31.8 <0.01 0.02 5.2 0.126 0.13 1.29 53 0.68 8

11.3 <0.001 <0.01 0.12 4.5 0.4 0.5 30 0.01 0.01 5.7 0.109 0.11 1.07 51 0.19 10.69.8 <0.001 <0.01 0.18 3.5 0.4 0.4 26.8 0.01 0.02 5.9 0.098 0.11 1.38 48 0.31 9.9814.2 0.002 0.19 0.23 4.3 0.9 0.7 49.8 0.01 0.04 4.7 0.12 0.1 1.08 49 1.32 9.8410.7 0.001 0.03 0.18 4.4 0.9 0.7 30.8 0.01 0.03 3.2 0.129 0.11 0.96 89 1.53 6.6244.4 0.001 0.01 0.16 10.3 0.7 0.9 21.2 0.01 0.03 5.9 0.217 0.33 1.38 97 0.48 9.45

25.5 0.005 0.58 0.74 6.2 1.9 1 51.1 <0.01 0.07 4.6 0.156 0.28 1.35 69 0.98 9.1416.1 <0.001 0.04 0.26 3 0.7 0.8 15.8 <0.01 0.03 1.6 0.096 0.12 0.68 71 0.58 3.2620.5 <0.001 0.02 0.22 5.9 1 0.8 19.7 0.01 0.03 4.4 0.131 0.21 1.54 73 1.2 7.62

12.7 <0.001 0.01 0.15 4.4 0.8 0.8 15.9 0.01 0.03 4.2 0.138 0.1 0.91 114 0.18 4.77



Fraction Analyzed



General Method



-74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm

Zn Zr Ag Al As Ba Be Bi Ca Cd Co Cr Cu Fe Ga K La Mg Mn Mo Na

ppm ppm ppm % ppm ppm ppm ppm % ppm ppm ppm ppm % ppm % ppm % ppm ppm %2 0.5 1 0.05 50 50 10 20 0.05 10 10 10 10 0.05 50 0.1 50 0.05 10 10 0.05

Aqua Regia Aqua Regia 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-AcidME-MS41 ME-MS41 ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a

168 <0.5 3 3.61 <50 520 <10 <20 1.55 <10 10 100 20 4.06 <50 0.7 <50 0.6 1690 <10 1.5924 5.4 1 4.15 <50 510 <10 <20 1.8 <10 10 80 20 4.39 <50 1.2 <50 0.67 840 <10 2.2928 10.5 <1 3.87 <50 500 <10 <20 2.04 <10 10 80 30 4.42 <50 1.1 <50 0.7 750 <10 2.3933 10.7 9 2.99 <50 470 <10 <20 2.38 <10 10 100 30 4.24 <50 1.1 <50 0.85 780 <10 2.42

24 2.9 1 2.26 <50 270 <10 <20 1.85 <10 <10 70 260 2.77 <50 0.7 <50 0.52 310 10 0.9230 9.5 <1 3.83 <50 520 <10 <20 2.68 <10 10 80 40 3.72 <50 1.2 <50 0.9 570 <10 2.4748 8 5 4.17 <50 440 <10 <20 3.21 <10 20 90 110 4.86 <50 1 <50 1.76 710 <10 2.2863 5.2 <1 4.89 <50 480 <10 <20 1.76 <10 20 100 240 5.17 <50 0.9 <50 0.93 640 <10 1.8729 9.3 <1 3.07 <50 520 <10 <20 2.16 <10 10 80 30 3.4 <50 1.3 <50 0.72 520 <10 2.4826 10.1 <1 3.15 <50 500 <10 <20 2.29 <10 10 80 50 3.06 <50 1.5 <50 0.82 460 <10 2.5434 9.9 2 3.97 <50 490 <10 <20 2.52 <10 20 90 140 4.05 <50 1.3 <50 1.14 560 <10 2.4352 10.8 1 4.63 <50 550 <10 <20 2.02 <10 20 100 100 4.48 <50 1 <50 0.91 640 <10 2.353 2.8 2 6.88 <50 300 <10 <20 5.56 <10 40 270 60 5.26 <50 0.5 <50 2.57 720 <10 2.1148 4.6 <1 4.28 <50 620 <10 <20 1.63 <10 10 100 30 4.06 <50 0.9 <50 0.84 590 <10 2.04

37 10.7 <1 3.55 <50 520 <10 <20 1.96 <10 10 90 70 4.04 <50 1.2 <50 0.79 550 <10 2.3

38 11.4 <1 3.33 <50 520 <10 <20 2.07 <10 10 80 50 3.94 <50 1.1 <50 0.82 640 <10 2.4

142 6.4 <1 3.91 <50 450 <10 <20 1.29 <10 20 150 110 6.41 <50 0.8 <50 1.3 540 <10 1.45

131 12.3 2 4.91 <50 520 <10 <20 1.76 <10 20 130 240 8.26 <50 1.3 <50 1.42 790 <10 1.752 5.5 <1 4.57 <50 510 <10 <20 1.38 <10 10 100 70 4.94 <50 1.1 <50 0.87 550 <10 1.81

61 13.4 <1 3.9 <50 560 <10 <20 2 <10 20 90 120 5.28 <50 1.3 <50 1.05 810 <10 2.2474 8.3 <1 5.39 <50 370 <10 <20 3.84 <10 30 140 100 6.15 <50 0.9 <50 2.22 760 <10 1.9754 4 <1 4.01 <50 510 <10 <20 1.15 <10 20 100 40 3.92 <50 0.9 <50 0.76 520 <10 1.57

70 18.2 2 4.72 <50 800 <10 <20 1.91 <10 10 80 50 4.46 <50 1.4 <50 1.18 650 <10 2.4578 17.6 <1 4.61 <50 490 <10 <20 1.96 <10 20 110 90 6.81 <50 1.2 <50 1.31 800 <10 1.98

120 7.7 3 3.69 <50 360 <10 <20 2.33 <10 20 210 170 5 <50 0.9 <50 1.43 660 <10 1.48159 13.8 1 3.93 <50 410 <10 <20 2.2 <10 20 160 290 6.17 <50 0.9 <50 1.48 640 <10 1.69210 15.8 24 5.6 <50 390 <10 <20 2.35 <10 40 140 1510 12.25 <50 1.1 <50 2.32 930 <10 1.3640 11.5 1 3.8 <50 600 <10 <20 2.36 <10 10 80 40 5.18 <50 1.4 <50 1.05 740 <10 2.4

32 11.1 <1 3.72 <50 560 <10 <20 2.15 <10 10 70 30 3.73 <50 1.3 <50 0.8 640 <10 2.4238 9.5 <1 3.26 <50 550 <10 <20 1.97 <10 10 80 30 3.65 <50 1.4 <50 0.69 600 <10 2.4753 8.8 <1 4.62 <50 430 <10 <20 3 <10 40 100 780 5.89 <50 1 <50 1.76 780 <10 2.1461 2.8 1 4.43 <50 410 <10 <20 2.29 <10 20 160 150 5.63 <50 0.7 <50 1.13 1110 <10 1.7171 12.3 <1 4.57 <50 430 <10 <20 1.81 <10 20 130 90 5.3 <50 0.9 <50 1.2 700 <10 2.11

58 11.2 <1 5.5 <50 500 <10 <20 2.39 <10 70 140 1120 8.21 <50 1.2 <50 1.57 990 <10 1.9569 1 <1 3.36 <50 410 <10 <20 1.15 <10 20 120 120 4.43 <50 1.1 <50 0.73 650 <10 1.2364 3.2 <1 4.11 <50 460 <10 <20 1.52 <10 20 120 190 4.96 <50 1.2 <50 0.95 640 <10 1.66

51 4.2 <1 4.62 <50 410 <10 <20 1.59 <10 20 160 40 5.64 <50 1 <50 1.02 630 <10 1.42



Fraction Analyzed



General Method



-74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm

Ni P Pb S Sb Sc Sr Th Ti Tl U V W Zn CO2 Total Sulphur Sulphate MPA NP

ppm ppm ppm % ppm ppm ppm ppm % ppm ppm ppm ppm ppm % CO2 % S % S kgCaCO3/t ore kgCaCO3/t ore10 50 20 0.1 50 10 10 50 0.05 50 50 10 50 20 0.2 0.01 0.01 0.3 1

4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid 4-Acid ABA ABA ABA ABA ABAME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a C-GAS05 S-IR08 S-GRA06a OA-VOL08 OA-VOL08

40 1140 <20 <0.1 <50 <10 260 <50 0.44 <50 <50 90 <50 110 <0.2 0.09 <0.01 1.6 330 810 <20 <0.1 <50 10 360 <50 0.34 <50 <50 80 <50 40 <0.2 <0.01 <0.01 <0.3 130 860 <20 <0.1 <50 10 360 <50 0.34 <50 <50 80 <50 40 <0.2 <0.01 <0.01 <0.3 350 760 <20 <0.1 <50 <10 340 <50 0.32 <50 <50 80 <50 50 <0.2 0.01 <0.01 0.3 9

60 590 <20 0.5 <50 <10 180 <50 0.2 <50 <50 50 <50 30 <0.2 0.31 <0.01 9.7 1940 860 <20 0.1 <50 10 370 <50 0.39 <50 <50 90 <50 40 0.2 0.05 <0.01 1.6 9120 730 <20 <0.1 <50 <10 330 <50 0.39 <50 <50 80 <50 60 <0.2 0.02 <0.01 0.6 26110 880 <20 <0.1 <50 10 300 <50 0.41 <50 <50 110 <50 70 <0.2 <0.01 <0.01 <0.3 640 930 <20 <0.1 <50 <10 360 <50 0.35 <50 <50 80 <50 40 <0.2 <0.01 <0.01 <0.3 450 890 <20 <0.1 <50 <10 350 <50 0.36 <50 <50 80 <50 40 <0.2 0.02 <0.01 0.6 7110 860 <20 0.1 <50 10 360 <50 0.37 <50 <50 90 <50 50 <0.2 0.12 <0.01 3.8 1960 860 <20 <0.1 <50 10 360 <50 0.39 <50 <50 100 <50 60 <0.2 <0.01 <0.01 <0.3 25190 360 <20 <0.1 <50 <10 320 <50 0.25 <50 <50 60 <50 60 <0.2 <0.01 <0.01 <0.3 550 1230 <20 <0.1 <50 10 340 <50 0.44 <50 <50 100 <50 60 <0.2 <0.01 <0.01 <0.3 3

80 810 30 <0.1 <50 10 340 <50 0.38 <50 <50 90 <50 60 <0.2 <0.01 <0.01 <0.3 6

50 920 <20 <0.1 <50 10 340 <50 0.37 <50 <50 80 <50 50 <0.2 <0.01 <0.01 <0.3 6

120 1010 <20 <0.1 <50 10 200 <50 0.46 <50 <50 130 <50 160 <0.2 0.01 <0.01 0.3 2

130 1160 <20 0.2 <50 10 240 <50 0.42 <50 <50 130 <50 150 <0.2 0.06 <0.01 1.9 470 610 <20 <0.1 <50 10 290 <50 0.39 <50 <50 90 <50 60 <0.2 <0.01 <0.01 <0.3 4

70 890 <20 <0.1 <50 10 350 <50 0.38 <50 <50 90 <50 80 <0.2 <0.01 <0.01 <0.3 6190 500 <20 <0.1 <50 10 300 <50 0.3 <50 <50 80 <50 80 <0.2 0.02 <0.01 0.6 1970 590 <20 <0.1 <50 10 210 <50 0.44 <50 <50 100 <50 70 <0.2 <0.01 <0.01 <0.3 2

40 1230 <20 <0.1 <50 10 450 <50 0.33 <50 <50 90 <50 80 <0.2 <0.01 <0.01 <0.3 6100 780 <20 <0.1 <50 10 290 <50 0.3 <50 <50 90 <50 80 <0.2 0.01 <0.01 0.3 12

130 790 <20 0.1 <50 10 180 <50 0.66 <50 <50 150 <50 150 <0.2 0.03 <0.01 0.9 7130 840 <20 0.2 <50 10 210 <50 0.65 <50 <50 170 <50 180 <0.2 0.03 <0.01 0.9 5470 950 <20 0.6 <50 10 200 <50 0.4 <50 <50 130 <50 240 <0.2 0.11 <0.01 3.4 540 920 <20 0.1 <50 10 390 <50 0.33 <50 <50 90 <50 60 0.2 0.05 <0.01 1.6 11

40 1030 <20 <0.1 <50 10 380 <50 0.36 <50 <50 80 <50 50 <0.2 <0.01 <0.01 <0.3 540 970 <20 <0.1 <50 10 350 <50 0.36 <50 <50 80 <50 50 <0.2 <0.01 <0.01 <0.3 3390 950 <20 0.2 <50 10 330 <50 0.46 <50 <50 90 <50 70 <0.2 0.05 0.04 1.6 20130 870 <20 <0.1 <50 10 250 <50 0.74 <50 <50 140 <50 80 <0.2 0.01 0.02 0.3 9100 850 <20 <0.1 <50 10 300 <50 0.51 <50 <50 120 <50 80 <0.2 <0.01 0.02 <0.3 5

530 860 <20 0.5 <50 10 330 <50 0.51 <50 <50 110 <50 90 <0.2 0.5 0.07 15.6 1090 670 40 <0.1 <50 10 180 <50 0.51 <50 <50 110 <50 110 <0.2 0.09 0.01 2.8 3110 710 <20 <0.1 <50 10 240 <50 0.47 <50 <50 110 <50 90 <0.2 0.02 0.02 0.6 4

80 950 <20 <0.1 <50 10 190 <50 0.93 <50 <50 180 <50 80 <0.2 0.03 0.03 0.9 3



Fraction Analyzed



General Method



-2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm

Fizz Rating Ag Al As Au B Ba Be Bi Ca Cd Ce Co Cr Cs Cu

Unity ppm % ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm1 0.01 0.01 0.1 0.2 10 10 0.05 0.01 0.01 0.01 0.02 0.1 1 0.05 0.2

ABAOA-VOL08 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41

1 2.61 0.94 5.3 <0.2 <10 160 0.28 0.2 0.67 0.48 17.6 7.8 66 0.95 131 0.81 1 5.7 <0.2 <10 40 0.34 0.04 0.36 0.07 35.6 7.3 115 0.9 201 0.64 0.78 3.6 <0.2 <10 40 0.29 0.03 0.44 0.08 31.1 7.4 117 0.83 25.81 7.85 0.97 2.8 <0.2 <10 40 0.26 0.03 0.59 0.06 30.3 8.5 105 0.72 26.2

1 0.36 0.78 3.4 <0.2 <10 70 0.31 0.04 1.19 0.45 22.1 4.8 246 0.53 2171 0.09 0.77 4.2 <0.2 <10 40 0.27 0.03 0.62 0.1 30.7 6.3 118 0.68 36.11 3.39 1.55 2.2 <0.2 <10 50 0.27 0.04 0.95 0.1 30.2 16.6 102 1.07 91.51 0.14 1.74 5.7 <0.2 <10 60 0.41 0.11 0.48 0.1 34.8 14.3 124 1.34 146.51 0.47 0.64 1.4 <0.2 <10 30 0.25 0.02 0.41 0.04 30.8 5.3 109 0.53 21.51 0.36 0.66 1.2 <0.2 <10 30 0.19 0.03 0.46 0.05 30.8 5.9 110 0.62 63.61 0.69 1.08 2.3 <0.2 <10 30 0.26 0.06 0.57 0.13 27.8 14.3 104 1.06 187.51 0.07 1.1 2.8 <0.2 <10 50 0.38 0.06 0.46 0.09 34 10.1 123 0.95 601 0.05 3.58 1.3 <0.2 <10 40 0.19 <0.01 2.03 0.08 15.7 29.8 133 0.57 36.11 0.11 1.61 2.7 <0.2 <10 70 0.4 0.06 0.32 0.07 38.1 9.8 95 1.39 20.9

1 0.14 1.13 3.2 <0.2 <10 50 0.32 0.06 0.46 0.06 39 9.4 105 1.01 29.3

1 0.11 0.76 3.7 <0.2 <10 40 0.29 0.03 0.44 0.08 33.5 7.3 107 0.73 23.7

1 0.01 1.63 5.8 <0.2 <10 60 0.46 0.07 0.28 0.07 29.1 8.3 120 2.07 59.2

1 0.11 1.82 6.9 <0.2 <10 70 0.66 0.17 0.46 0.27 34.6 16.1 138 2.49 140.51 0.1 1.87 5.6 <0.2 <10 50 0.54 0.08 0.41 0.07 31.7 12.3 98 1.39 46.1

1 0.38 1.17 8.5 <0.2 <10 50 0.36 0.06 0.49 0.15 35.2 14.3 115 1.49 74.51 0.08 4.06 4.2 <0.2 <10 70 0.41 0.06 2.04 0.15 29.4 27.5 140 2.03 85.71 0.05 2 3.6 <0.2 <10 80 0.45 0.09 0.37 0.05 32.7 12.9 111 1.79 29.4

1 0.05 1.57 3.6 <0.2 <10 80 0.47 0.09 0.39 0.05 42.2 10.1 131 2.59 36.61 0.06 2.13 7.1 <0.2 <10 80 0.47 0.09 0.67 0.12 34.6 16.5 125 2.75 63.7

1 0.79 1.87 3.2 <0.2 <10 70 0.48 0.09 0.64 0.28 32.7 13.3 143 1.96 1151 0.12 1.97 4.7 <0.2 <10 70 0.53 0.1 0.66 0.21 33.9 12.7 142 2.17 1551 6.33 2.11 6 <0.2 <10 70 0.53 0.17 0.72 0.32 30.3 19.4 137 2.41 6802 0.36 0.9 3.5 <0.2 <10 50 0.35 0.05 0.57 0.09 31.5 7.1 113 1.15 34.3

1 0.03 0.71 3 <0.2 <10 40 0.29 0.06 0.4 0.05 29.4 5.4 120 0.67 171 0.03 0.63 2.6 <0.2 <10 30 0.26 0.06 0.37 0.08 30.3 5 105 0.63 17.21 0.13 1.24 4.2 <0.2 <10 40 0.26 0.07 0.66 0.1 27.4 19.5 113 0.68 3421 0.08 1.83 3.5 <0.2 <10 50 0.44 0.05 0.6 0.15 30.1 17.3 99 0.88 97.21 0.07 1.75 3.8 <0.2 <10 60 0.46 0.03 0.5 0.07 36.2 14.4 113 1.43 62

1 0.3 1.88 9.8 <0.2 <10 60 0.36 0.15 0.78 0.27 34.4 48.4 120 1.43 8171 0.21 1.83 4.9 <0.2 <10 80 0.38 0.13 0.3 0.24 24.4 13.5 90 1.45 73.81 0.14 2.26 4.9 <0.2 <10 60 0.48 0.09 0.34 0.12 31.4 16.4 88 1.78 116.5

1 0.07 2.24 4.6 <0.2 <10 60 0.45 0.07 0.3 0.14 28.2 15.2 84 0.99 22.9



Fraction Analyzed



General Method




Fe Ga Ge Hf Hg In K La Li Mg Mn Mo Na Nb Ni P

% ppm ppm ppm ppm ppm % ppm ppm % ppm ppm % ppm ppm ppm0.01 0.05 0.05 0.02 0.01 0.005 0.01 0.2 0.1 0.01 5 0.05 0.01 0.05 0.2 10

ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS412.53 3.98 0.05 <0.02 0.08 0.015 0.08 7.6 5.7 0.22 1755 1.7 0.02 0.97 17.6 10102.99 3.49 0.13 0.17 0.02 0.011 0.08 16.6 7.5 0.33 581 2.02 0.04 0.63 18.9 5602.72 3.05 0.13 0.27 0.01 0.01 0.09 15.6 7.6 0.34 523 2.01 0.05 0.54 20.6 5502.54 3.32 0.12 0.25 0.01 0.01 0.11 14.6 7.5 0.5 411 1.91 0.12 0.21 26.5 510

2.91 2.19 0.11 0.05 0.1 0.01 0.04 12.3 3.8 0.25 286 42.9 0.02 0.94 70.2 4902.09 2.96 0.08 0.26 0.01 0.009 0.11 15.6 9.1 0.38 209 2.47 0.07 0.4 23.6 5902.98 4.55 0.1 0.24 0.01 0.012 0.16 14.9 10.6 1.15 322 2.68 0.22 0.28 79.6 4903.5 6.02 0.12 0.08 0.02 0.02 0.09 18.3 13.2 0.51 359 8.09 0.06 1.48 67.4 550

1.62 2.75 0.05 0.23 <0.01 0.007 0.09 14.9 8.2 0.3 175 2.28 0.06 0.37 19.8 4601.5 2.71 0.06 0.26 0.01 0.008 0.09 15.8 8.1 0.34 158 2.02 0.07 0.32 27.6 490

2.77 3.68 0.1 0.23 0.01 0.013 0.13 13.7 11.7 0.74 258 2.26 0.09 0.2 98 4602.64 4.07 0.1 0.25 0.01 0.014 0.11 17.6 10.4 0.46 274 2.49 0.07 0.34 35.7 4803.71 7.11 0.11 0.06 0.01 0.008 0.11 8.2 8.1 2.35 440 3.95 0.54 0.18 137.5 2602.59 5.74 0.07 0.1 0.02 0.017 0.14 16.7 19.4 0.45 270 1.89 0.04 1.74 27.6 930

2.62 4.26 0.11 0.27 0.01 0.013 0.12 20.3 10.8 0.46 285 2.09 0.06 0.42 26.1 620

2.16 3.23 0.09 0.28 0.01 0.01 0.11 17.2 9.1 0.36 238 2.29 0.06 0.34 21.6 560

4.32 6.24 0.05 0.11 0.01 0.019 0.23 13.1 30.1 0.58 180 2.98 0.03 2.48 58.2 600

5.42 6.32 0.22 0.25 0.01 0.026 0.37 17.5 28.1 0.76 246 3.71 0.07 1.01 72.3 6703.66 5.76 0.12 0.1 0.03 0.018 0.11 15.8 15.8 0.52 257 2.02 0.05 1.86 47.8 620

3.41 4.24 0.14 0.31 0.02 0.015 0.18 17.6 12.6 0.63 346 2.85 0.08 0.27 50.7 5704.88 8.86 0.17 0.21 0.01 0.019 0.29 13.9 15.3 2.04 470 11.65 0.52 0.34 151 4403.13 6.92 0.1 0.14 0.02 0.02 0.19 14.2 22 0.54 394 2.55 0.06 2.07 45 470

2.87 6.1 0.12 0.39 0.01 0.016 0.37 21.5 23.5 0.69 326 2.39 0.05 0.41 31.1 6605.16 6.86 0.23 0.38 0.02 0.021 0.43 17.8 19.9 0.97 411 2.67 0.11 0.27 65.1 630

2.45 6.28 0.19 0.17 0.02 0.025 0.25 16.2 21.1 0.68 234 2.69 0.09 2.29 68 5103.18 6.64 0.15 0.32 <0.01 0.029 0.29 17.6 22.4 0.73 207 3.16 0.12 1.4 64.3 5704.73 6.61 0.19 0.26 0.01 0.028 0.38 15.2 27.3 1.11 260 3.31 0.13 0.69 169.5 5202.74 3.6 0.11 0.27 <0.01 0.012 0.21 16.3 13.7 0.49 274 2.42 0.06 0.31 24.1 550

2.03 2.93 0.08 0.26 0.01 0.01 0.1 16.2 8.4 0.32 239 2.17 0.05 0.35 15.1 5101.94 2.66 0.08 0.25 0.01 0.008 0.09 14.7 7.8 0.26 203 2.12 0.05 0.36 15.2 4803.02 3.76 0.11 0.2 0.01 0.014 0.11 13.5 8.6 0.89 297 3.05 0.13 0.27 160 4703.26 5.43 0.11 0.06 0.03 0.02 0.08 13 12.8 0.62 645 2.58 0.09 1.95 83.8 5103.21 5.65 0.1 0.22 0.01 0.017 0.19 16.8 14.9 0.71 344 2.18 0.09 1.4 66.7 500

4.57 5.66 0.15 0.27 0.02 0.021 0.19 17.1 14.3 0.63 339 4.59 0.16 0.6 382 5603.55 6.73 0.09 0.05 0.07 0.023 0.11 11.1 12.6 0.47 450 2.37 0.04 1.5 54.3 5303.99 7.48 0.11 0.11 0.03 0.024 0.19 14 17.5 0.65 435 2.38 0.06 1.46 68.4 420

3.46 7.39 0.08 0.13 0.03 0.023 0.06 11.6 10.4 0.67 361 1.72 0.06 1.43 54.9 600



Fraction Analyzed



General Method




Pb Rb Re S Sb Sc Se Sn Sr Ta Te Th Ti Tl U V

ppm ppm ppm % ppm ppm ppm ppm ppm ppm ppm ppm % ppm ppm ppm0.2 0.1 0.001 0.01 0.05 0.1 0.2 0.2 0.2 0.01 0.01 0.2 0.005 0.02 0.05 1

ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS4116.4 12.2 <0.001 0.06 0.17 1.3 0.6 1 44.6 <0.01 0.03 0.5 0.052 0.09 0.33 403.5 8.2 <0.001 <0.01 0.07 3.2 0.4 0.5 27.8 <0.01 <0.01 3.6 0.1 0.07 0.62 433.8 7.4 <0.001 <0.01 0.1 3.1 0.3 0.6 26.9 <0.01 <0.01 3.5 0.095 0.06 0.58 402.7 7.3 <0.001 0.01 0.08 2.7 0.3 1.1 34.5 <0.01 <0.01 3.5 0.089 0.06 0.53 35

3.4 3.7 0.014 0.53 0.34 2.9 2.9 1.9 47.6 0.02 0.01 1.5 0.028 0.07 1.14 252.8 7.6 <0.001 0.09 0.1 2.6 0.3 0.4 30.3 <0.01 <0.01 4.1 0.096 0.06 0.87 362.7 9.7 <0.001 0.05 0.12 3.2 0.9 0.8 48.4 <0.01 <0.01 3.2 0.116 0.08 0.81 384.7 11 0.001 0.01 0.16 4.8 0.5 0.9 28.4 <0.01 <0.01 3.3 0.119 0.11 0.99 652.7 6.2 <0.001 <0.01 0.05 2.2 0.4 0.4 27.1 <0.01 <0.01 3.7 0.085 0.04 0.59 302.6 5.8 <0.001 0.03 0.05 2.2 0.3 0.4 27.6 <0.01 <0.01 4 0.085 0.04 0.86 302.9 8.8 0.002 0.18 0.11 3.4 0.5 0.5 29.6 <0.01 <0.01 3.3 0.097 0.08 0.82 413.1 10.6 <0.001 <0.01 0.13 3.7 0.3 0.5 29 <0.01 <0.01 3.7 0.116 0.08 0.83 461.8 5.2 <0.001 <0.01 0.06 2.9 0.2 0.3 89.9 <0.01 <0.01 1.5 0.062 0.04 0.35 214.6 15.6 <0.001 0.01 0.09 3 0.5 0.6 23.1 <0.01 0.01 3.8 0.123 0.1 0.66 57

3.4 10.9 <0.001 <0.01 0.12 4.1 0.4 0.6 32.1 <0.01 0.01 4 0.127 0.09 0.85 53

2.8 8.9 <0.001 0.01 0.08 2.8 0.2 0.4 28.6 <0.01 <0.01 4.1 0.098 0.06 0.67 38

3.4 19.9 0.001 0.02 0.19 4.9 0.5 0.6 19 <0.01 0.02 3.6 0.133 0.13 1.07 61

3.4 28.9 0.001 0.11 0.35 7.7 0.7 0.7 26.6 0.01 0.05 4.1 0.164 0.24 1.72 744.2 13 <0.001 0.01 0.16 3.8 0.5 0.6 25.6 <0.01 0.01 3.2 0.122 0.11 0.81 65

2.9 16.4 <0.001 0.01 0.22 4.1 0.4 0.6 30.4 <0.01 0.02 4.3 0.112 0.12 0.98 453 18.8 0.001 0.03 0.25 5.9 0.5 0.8 89.7 <0.01 0.01 3.4 0.125 0.15 1.23 48

4.8 19.5 <0.001 0.01 0.13 4.3 0.6 0.8 25.9 <0.01 0.01 4 0.144 0.12 0.88 69

3.1 30 <0.001 0.01 0.23 6.2 0.3 0.6 30.7 <0.01 0.01 4.6 0.165 0.2 1.29 585 32.7 <0.001 0.02 0.27 7.2 0.3 0.7 36.3 <0.01 0.02 4.4 0.153 0.21 1.41 62

4.2 21.6 0.001 0.06 0.37 6.5 0.8 1 29.7 <0.01 0.02 4 0.153 0.19 1.5 734 24.9 0.001 0.08 0.41 6.8 0.6 0.7 33.4 <0.01 0.02 3.9 0.176 0.21 2.04 77

3.5 28.3 0.002 0.2 0.47 7 1 1.4 36.2 <0.01 0.03 3.8 0.148 0.24 1.85 602.5 14 0.001 0.1 0.12 3.4 0.4 0.5 28.9 <0.01 0.01 3.6 0.099 0.11 0.93 39

2.6 7.8 <0.001 <0.01 0.07 2.8 0.2 0.4 26.3 <0.01 <0.01 3.1 0.09 0.06 0.58 362.6 6.9 <0.001 <0.01 0.09 2.5 <0.2 0.4 25.6 <0.01 <0.01 3.3 0.083 0.07 0.77 342.7 8.2 0.001 0.08 0.1 2.7 0.4 0.4 36.5 <0.01 <0.01 2.8 0.095 0.06 0.62 345 7.7 0.001 0.02 0.15 3.2 0.6 0.7 33.3 0.01 <0.01 2.3 0.123 0.08 0.65 71

3.3 15.1 <0.001 <0.01 0.11 4.5 0.5 0.6 27.6 <0.01 <0.01 3.7 0.152 0.12 0.77 67

3.9 14.9 0.004 0.63 0.4 4.1 1.2 0.6 42.4 <0.01 0.03 3.4 0.133 0.16 0.85 5813.2 15.3 <0.001 0.03 0.27 3 0.7 3.1 21.1 0.01 0.05 1.8 0.091 0.1 0.64 664.5 18.1 <0.001 0.02 0.18 5 0.7 1.1 21.1 0.01 0.04 3.4 0.12 0.16 0.99 65

6.2 9.6 <0.001 0.01 0.14 3.2 0.5 1.4 20.5 0.01 0.03 3 0.126 0.07 0.61 89



Fraction Analyzed



General Method




W Y Zn Zr Ag Al As Ba Be Bi Ca Cd Co Cr Cu Fe

ppm ppm ppm ppm ppm % ppm ppm ppm ppm % ppm ppm ppm ppm %0.05 0.05 2 0.5 1 0.05 50 50 10 20 0.05 10 10 10 10 0.05

ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a1.49 2.22 79 0.9 2 2.8 <50 500 <10 <20 1.54 <10 10 120 10 3.320.33 5.18 23 7.4 2 5.17 <50 590 <10 <20 1.65 <10 10 160 20 3.980.27 5.75 25 8.8 <1 3.87 <50 580 <10 <20 1.71 <10 10 170 30 3.681.24 5.28 26 8.1 6 4.67 <50 580 <10 <20 2.06 <10 10 160 20 3.59

1.69 7.38 18 3.1 <1 1.85 <50 210 <10 <20 1.49 <10 <10 220 210 2.680.26 5.84 25 8.2 <1 4.36 <50 610 <10 <20 2.07 <10 10 160 30 3.082.19 5.48 38 7.8 3 4.45 <50 530 <10 <20 2.65 <10 20 150 90 4.140.28 7.31 41 4.4 <1 4.94 <50 580 <10 <20 1.74 <10 20 150 140 4.280.38 4.89 19 7.4 <1 4.65 <50 650 <10 <20 1.76 <10 10 140 20 2.390.34 5.12 20 7.6 <1 4.32 <50 630 <10 <20 1.82 <10 10 140 60 2.310.57 5.2 32 8 <1 3.92 <50 560 <10 <20 1.91 <10 20 150 180 3.71.14 6.8 31 9.1 <1 5.05 <50 640 <10 <20 1.87 <10 10 180 60 3.810.54 2.97 42 2.7 <1 4.99 <50 320 <10 <20 4.88 <10 30 300 40 4.330.32 4.9 40 4.9 <1 5.3 <50 730 <10 <20 1.72 <10 20 150 20 3.71

1.6 7.58 31 9.6 <1 4.86 <50 640 <10 <20 1.92 <10 10 150 30 3.81

0.57 5.74 25 8.8 <1 5.03 <50 650 <10 <20 1.89 <10 10 150 20 3.27

0.59 4.95 64 4.4 <1 4.31 <50 670 <10 <20 1.49 <10 10 190 60 6.14

3.21 8.71 82 9.4 <1 4.58 <50 630 <10 <20 1.72 <10 20 170 140 7.410.34 6.32 38 5.1 <1 3.99 <50 610 <10 <20 1.57 <10 10 150 40 4.78

12.45 6.48 42 10.9 1 4.06 <50 630 <10 <20 1.76 <10 20 160 80 4.991.42 6.03 63 8.1 1 5.28 <50 430 <10 <20 3.47 <10 30 180 90 5.772.7 5.38 45 6.9 <1 3.52 <50 580 <10 <20 1.55 <10 20 170 30 4.08

0.91 7.28 55 14.1 <1 5.39 <50 910 <10 <20 1.64 <10 10 150 40 3.773.79 7.33 58 13.4 <1 4.66 <50 590 <10 <20 2 <10 20 170 60 6.69

0.87 7.09 80 6.7 4 3.77 <50 500 <10 <20 2.13 <10 20 210 110 4.630.41 8.38 92 10.9 <1 4.5 <50 550 <10 <20 2.41 <10 20 210 150 5.582.92 7.3 99 8.8 5 5.62 <50 640 <10 <20 2.14 <10 20 180 650 6.6

1 5.42 31 8.5 <1 4.54 <50 750 <10 <20 1.85 <10 10 140 30 4.33

0.24 5.84 21 7.6 <1 4.36 <50 690 <10 <20 1.64 <10 10 150 20 2.840.24 5.77 23 7.7 <1 5.02 <50 690 <10 <20 1.71 <10 10 130 10 2.840.54 5.31 32 6.6 2 5.34 <50 630 <10 <20 2.25 <10 20 160 340 4.330.73 6.29 44 3.3 3 4.49 <50 480 <10 <20 2.51 <10 30 180 100 5.050.27 6.83 42 9.1 <1 4.49 <50 490 <10 <20 2.21 <10 20 180 60 4.81

0.52 6.57 39 10.2 <1 5.32 <50 550 <10 <20 2.28 <10 50 200 800 7.20.57 4.13 58 1.3 2 4.2 <50 490 <10 <20 1.51 <10 20 150 80 5.071.5 5.9 53 3.4 1 4.88 <50 550 <10 <20 1.76 <10 20 150 130 5.57

0.21 4.73 44 4.1 <1 4.86 <50 520 <10 <20 1.96 <10 20 170 30 5.15



Fraction Analyzed



General Method




Ga K La Mg Mn Mo Na Ni P Pb S Sb Sc Sr Th Ti

ppm % ppm % ppm ppm % ppm ppm ppm % ppm ppm ppm ppm %50 0.1 50 0.05 10 10 0.05 10 50 20 0.1 50 10 10 50 0.05

ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a<50 0.9 <50 0.48 1860 <10 1.58 20 920 20 0.1 <50 <10 270 <50 0.28<50 1.6 <50 0.67 890 <10 2.62 30 520 <20 <0.1 <50 10 450 <50 0.26<50 1.4 <50 0.63 820 <10 2.73 30 510 <20 <0.1 <50 <10 420 <50 0.26<50 1.7 <50 0.8 740 <10 2.8 40 490 <20 <0.1 <50 10 440 <50 0.25

<50 0.5 <50 0.35 330 30 0.65 70 480 <20 0.5 <50 <10 140 <50 0.11<50 1.7 <50 0.72 490 <10 2.81 30 530 20 0.1 <50 10 460 <50 0.26<50 1.4 <50 1.42 640 <10 2.65 90 510 <20 0.1 <50 10 400 <50 0.31<50 1 <50 0.81 620 <10 2.45 70 580 <20 <0.1 <50 10 420 <50 0.33<50 1.8 <50 0.57 370 <10 3.08 30 460 <20 <0.1 <50 <10 510 <50 0.22<50 1.8 <50 0.64 360 <10 3 30 460 <20 <0.1 <50 <10 470 <50 0.23<50 1.6 <50 1.01 540 <10 2.73 110 450 <20 0.1 <50 10 410 <50 0.32<50 1.7 <50 0.8 610 <10 2.77 50 460 <20 <0.1 <50 10 470 <50 0.3<50 0.7 <50 1.94 620 <10 2.42 150 240 <20 <0.1 <50 <10 350 <50 0.21<50 1.4 <50 0.89 560 <10 2.64 40 940 <20 <0.1 <50 10 530 <50 0.36

<50 1.7 <50 0.81 600 <10 2.78 40 580 <20 <0.1 <50 10 490 <50 0.34

<50 1.8 <50 0.73 560 <10 2.91 30 540 20 <0.1 <50 10 500 <50 0.26

<50 1.7 <50 1.04 750 <10 2.25 70 620 <20 <0.1 <50 10 400 <50 0.31

<50 1.8 <50 1.24 920 <10 2.23 80 650 <20 0.1 <50 10 370 <50 0.34<50 1.4 <50 0.81 690 <10 2.34 50 550 <20 <0.1 <50 <10 410 <50 0.34

<50 1.7 <50 0.94 930 <10 2.59 80 530 <20 <0.1 <50 10 440 <50 0.28<50 1.2 <50 1.93 760 <10 2.26 160 410 <20 <0.1 <50 10 350 <50 0.27<50 1.2 <50 0.77 670 <10 2.38 60 460 20 <0.1 <50 <10 360 <50 0.39

<50 1.8 <50 0.88 600 <10 3.15 30 610 20 <0.1 <50 10 660 <50 0.25<50 1.6 <50 1.3 990 <10 2.35 70 600 <20 <0.1 <50 10 370 <50 0.25

<50 1.1 <50 1.17 780 <10 1.89 70 490 <20 0.1 <50 10 290 <50 0.52<50 1.5 <50 1.26 850 <10 2.25 80 570 <20 0.1 <50 10 340 <50 0.53<50 1.9 <50 1.52 790 <10 2.26 180 520 <20 0.2 <50 10 390 <50 0.33<50 1.6 <50 0.84 820 <10 2.85 30 520 <20 0.1 <50 10 500 <50 0.22

<50 1.8 <50 0.58 520 <10 3 20 440 <20 <0.1 <50 <10 530 <50 0.22<50 1.9 <50 0.58 490 <10 3 20 430 20 <0.1 <50 <10 520 <50 0.23<50 1.6 <50 1.22 650 <10 2.83 180 470 <20 0.1 <50 10 490 <50 0.3<50 0.9 <50 1.12 1050 <10 2.06 100 580 <20 <0.1 <50 10 310 <50 0.53<50 0.9 <50 1.09 760 <10 2.39 80 520 20 <0.1 <50 10 340 <50 0.47

<50 1.3 <50 1.42 1050 <10 2.39 380 530 <20 0.5 <50 10 400 <50 0.48<50 0.8 <50 0.9 790 <10 1.64 70 540 20 <0.1 <50 10 260 <50 0.47<50 0.8 <50 1.04 840 <10 2.09 90 500 <20 <0.1 <50 10 310 <50 0.45

<50 0.8 <50 1.14 720 <10 2.07 70 610 <20 <0.1 <50 10 300 <50 0.69



Fraction Analyzed



General Method



-2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm -2 mm+74 µm Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole

Tl U V W ZnInitial Sample

Wt

Volume

Influent

Volume

Effluent

Sample Wt After

Extraction

Moisture

ContentpH Redox Conductivity

Acidity (to

pH 4.5)

Total Acidity (to

pH 8.3)Alkalinity Fluoride

ppm ppm ppm ppm ppm kg mL mL kg % mV uS/cm mg CaCO3/L mg CaCO3/L mg CaCO3/L mg/L50 50 10 50 20

MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMPME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a ME-ICP61a meter meter meter titration titration titration

<50 <50 70 <50 90 1 670 569 1.104 12.8 8.07 399.9 330.5 #N/A 2.38 82.69 1.1<50 <50 70 <50 30<50 <50 70 <50 40<50 <50 60 <50 40

<50 <50 40 <50 30 1 1650 544 2.105 62.4 6.83 392.57 249.17 #N/A 6.56 8.54 0.08<50 <50 60 <50 40<50 <50 70 <50 50<50 <50 90 <50 60<50 <50 50 <50 30 1 655 551 1.104 11.6 7.44 361.32 54.29 #N/A 3.17 14.38 0.38<50 <50 60 <50 30 1 690 531 1.157 12.4 7.72 380.85 164.77 #N/A 2.85 37.68 0.6<50 <50 70 <50 40 1 625 523 1.103 7.4 7.69 385.25 253.14 #N/A 2.82 31 0.2<50 <50 70 <50 50 1 655 510 1.146 13.8 7.3 379.39 70 #N/A 3.02 7.68 0.15<50 <50 60 <50 50<50 <50 90 <50 60 1 715 518 1.198 20.8 6.88 390.62 30.48 #N/A 4.6 5.04 < 0.05

<50 <50 80 <50 50

<50 <50 70 <50 40 1 1115 1030 1.141 11.3 5.69 473.63 45.23 #N/A 6.98 1.56 0.42

<50 <50 90 <50 80

<50 <50 100 <50 100 1 1138 1028 1.155 13.9 3.71 490.23 355.82 #N/A 12.25 #N/A < 0.05<50 <50 90 <50 50

<50 <50 70 <50 60 1 1250 1044 1.123 9.06 7.13 341.3 55.25 #N/A 3.98 4.62 0.48<50 <50 80 <50 70<50 <50 100 <50 60

<50 <50 70 <50 70<50 <50 80 <50 70

<50 <50 110 <50 100<50 <50 120 <50 110<50 <50 90 <50 110 1 1174 1045 1.136 9.24 3.4 512.2 464.64 23.55 59.67 #N/A < 0.05<50 <50 60 <50 40

<50 <50 60 <50 30 1 1144 1013 1.125 8.87 7.05 303.22 50.77 #N/A 3.74 13.06 0.18<50 <50 60 <50 30<50 <50 70 <50 50 1 1132 1027 1.097 7.93 7.07 353.02 350.97 #N/A 4.05 11.21 0.28<50 <50 120 <50 70 1 1525 1050 1.874 30.86 5.66 399.9 161.99 #N/A 19.72 4.94 0.14<50 <50 110 <50 70

<50 <50 100 <50 70<50 <50 100 <50 80<50 <50 100 <50 70

<50 <50 140 <50 70



Fraction Analyzed



General Method



Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole Whole

Chloride SulphateHardness

CaCO3

Al Sb As Ba Be Bi B Cd Ca Cr Co Cu Fe Pb Li Mg Mn Hg

mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMP MWMPTurbidity ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS ICP-MS

9.16 68.3 71.5 0.042 0.0005 0.0029 0.01 < 0.0002 < 0.0002 0.23 < 0.00004 15.8 < 0.0002 < 0.0001 0.003 0.02 < 0.00005 0.0099 7.76 0.0592 0.02

2.73 93.4 102 0.13 0.0007 0.0044 0.035 < 0.0002 < 0.0002 0.18 < 0.00004 22.9 0.001 0.0007 0.011 0.12 0.00023 0.0043 10.9 0.192 < 0.02

1.28 8.53 18.6 0.19 0.0004 0.0014 0.0066 < 0.0002 < 0.0002 0.037 < 0.00004 3.62 0.0013 0.0012 0.028 0.31 < 0.00005 0.0016 2.32 0.236 < 0.022.33 39.9 57 0.092 0.0012 0.0022 0.014 < 0.0002 < 0.0002 0.098 < 0.00004 7.97 < 0.0002 0.0006 0.0089 0.07 < 0.00005 0.0058 9.01 0.0379 < 0.021.37 97.4 120 0.024 0.0011 0.0023 0.018 < 0.0002 < 0.0002 0.055 < 0.00004 17.7 < 0.0002 0.0017 0.0043 < 0.01 < 0.00005 0.0082 18.3 0.0596 < 0.021.91 21.2 23 0.067 0.0003 0.0004 0.0051 < 0.0002 < 0.0002 0.036 < 0.00004 5.86 < 0.0002 0.0005 0.0072 0.04 < 0.00005 0.0017 2.04 0.0453 0.02

1.9 3.41 7.2 0.32 < 0.0001 0.0004 0.014 < 0.0002 < 0.0002 0.03 0.00005 1.77 0.0011 0.0006 0.0054 0.06 < 0.00005 0.0006 0.66 0.0511 0.02

4.01 4.77 10.8 0.29 0.0003 0.0027 0.0083 < 0.0002 < 0.0002 0.012 0.00011 2.79 0.0003 0.0013 0.017 0.15 0.00028 0.0008 0.92 0.116 < 0.02

4.03 188 108 0.14 < 0.0001 0.0033 0.046 < 0.0002 < 0.0002 0.022 0.0025 17.8 0.0006 0.124 0.113 0.95 0.00058 0.02 15.3 1.09 < 0.02

0.74 16.5 17.7 0.091 0.0011 0.0032 0.003 < 0.0002 < 0.0002 0.013 0.00016 3.85 < 0.0002 0.0016 0.005 0.05 < 0.00005 0.0014 1.95 0.105 < 0.02

1.71 230 105 0.74 < 0.0001 0.0028 0.028 0.0008 < 0.0002 0.016 0.0066 21 0.0008 0.305 0.579 7.25 0.0014 0.028 12.9 1.31 < 0.02

3.62 1.74 23.3 0.068 < 0.0001 0.0005 0.0035 < 0.0002 < 0.0002 < 0.001 0.00005 5.92 < 0.0002 < 0.0001 0.0083 0.02 < 0.00005 < 0.0002 2.07 0.0075 < 0.02

3.33 166 141 0.01 0.0004 0.0011 0.0084 < 0.0002 < 0.0002 < 0.001 0.00007 27 < 0.0002 0.0051 0.008 < 0.01 < 0.00005 0.0003 17.8 0.305 < 0.0216.6 23.6 49.6 1.49 < 0.0001 0.0016 0.028 < 0.0002 < 0.0002 0.025 0.00019 9.64 0.003 0.0028 0.072 0.77 0.0028 0.0004 6.18 0.402 < 0.02


Appendix B Initial Summary of MWMP Data Provided to Barr Engineering

Results of Analysis from Overburden Drilling Program - Appendix B Page 1 of 1

Whole

MWMP

Whole

MWMPWhole MWMP Whole MWMP Whole MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

Whole

MWMP

pH Redox ConductivityTotal Acidity

(to pH 8.3)Alkalinity Fluoride Chloride Sulphate

Hardness

CaCO3Al Sb As Ba Be B Cd Ca Cr Co Cu Fe Pb Mg Mn Mo Ni P K Se Ag Na Tl Ti V Zn

Solids Leaches Stat mV uS/cm mg CaCO3/L mg CaCO3/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

Peat 6 2 P5 6.7715 392.9365 166.349 7.218 5.12 0.083 3.4235 27.09 52.22 0.198 -0.00006 0.00174 0.02835 -0.0002 0.03275 -0.0000285 10.303 0.0011 0.000805 0.01405 0.1525 0.0003585 6.416 0.2025 0.00152 0.00737 0.052 1.734 0.00064 -0.00005 4.3095 0.000072 0.001875 0.002115 0.00425

Median 6.245 396.235 205.58 13.14 6.74 0.11 9.665 58.5 75.8 0.81 0.0003 0.003 0.0315 -0.0002 0.1025 0.000075 16.27 0.002 0.00175 0.0415 0.445 0.001515 8.54 0.297 0.0053 0.0143 0.07 4.11 0.001 -0.00005 5.025 0.00009 0.00255 0.00315 0.0065

P95 5.7185 399.5335 244.811 19.062 8.36 0.137 15.9065 89.91 99.38 1.422 0.00066 0.00426 0.03465 -0.0002 0.17225 0.0001785 22.237 0.0029 0.002695 0.06895 0.7375 0.0026715 10.664 0.3915 0.00908 0.02123 0.088 6.486 0.00136 -0.00005 5.7405 0.000108 0.003225 0.004185 0.00875

Unsaturated

Mineral13 4 P5 7.283 345.109 32.957 3.116 4.662 0.1665 0.856 4.719 8.25 0.0694 -0.00006 0.0004 0.00321 -0.0002 0.0147 -0.000031 1.978 -0.0002 0.00051 0.00504 0.041 -0.00005 0.789 0.04588 0.000195 0.00155 -0.03 0.744 -0.0002 -0.00005 3.747 -0.00002 0.00113 0.00042 0.0021

Median 7.13 379.39 55.25 3.98 5.04 0.315 1.9 16.5 17.7 0.091 0.0003 0.0004 0.0051 -0.0002 0.03 0.00005 3.85 -0.0002 0.0006 0.0054 0.05 -0.00005 1.95 0.0511 0.0024 0.0029 -0.03 0.78 -0.0002 -0.00005 4.26 -0.00002 0.0023 0.0006 0.003

P95 6.905 389.497 68.525 4.538 7.416 0.4635 1.909 20.73 22.47 0.2971 0.00102 0.00292 0.01311 -0.0002 0.0354 0.000149 5.659 0.00097 0.0015 0.00702 0.059 -0.00005 2.031 0.09961 0.01257 0.00326 -0.03 1.23 0.00052 -0.00005 5.331 0.000025 0.00257 0.0006 0.0057

Saturated

Mineral19 6 P5

7.965 367.179 47.948 2.512 #N/A 0.236 1.307 5.898 13.14 0.0294 -0.0001 0.00164 0.00711 -0.0002 0.0132 -0.00004 3.039 -0.0002 0.00011 0.00339 -0.001 -0.00005 1.34 0.04429 0.000332 0.00201 -0.03 1.257 0.00055 -0.00005 3.691 -0.00002 0.00075 -0.0002 -0.0004

Median 7.44 399.9 253.14 3.17 #N/A 0.42 2.33 68.3 71.5 0.14 0.0004 0.0027 0.014 -0.0002 0.037 -0.00004 15.8 0.0003 0.0013 0.017 0.15 -0.00005 9.01 0.116 0.0274 0.019 -0.03 4.45 0.0019 -0.00005 7.19 -0.00002 0.0016 0.0014 0.003

P95 3.493 505.609 431.994 45.444 #N/A 1 7.621 217.4 116.4 0.605 0.00117 0.00318 0.0406 0.0005 0.1904 0.00537 20.04 0.00115 0.2507 0.4392 5.36 0.001154 17.4 1.244 0.03191 2.1812 0.04 9.827 0.00377 0.000965 37.07 0.000082 0.00614 0.00247 0.862

OB with

Mineralized

Rock

3 2 P5 7.069 305.71 65.78 3.7555 11.3025 0.185 3.3445 9.953 29.185 0.0129 -0.000075 0.00053 0.003745 -0.0002 -0.001 0.000051 6.974 -0.0002 0.00016 0.008015 -0.0085 -0.00005 2.8565 0.022375 0.00539 0.00456 -0.03 0.7285 -9E-05 -0.00005 2.334 -0.00002 -9.5E-05 -0.000165 0.00205

Median 7.06 328.12 200.87 3.895 12.135 0.23 3.475 83.87 82.15 0.039 0.00015 0.0008 0.00595 -0.0002 -0.001 0.00006 16.46 -0.0002 0.0025 0.00815 0.005 -0.00005 9.935 0.15625 0.0188 0.0384 -0.03 1.345 0.0009 -0.00005 6.96 -0.00002 0.00085 0.00015 0.0025

P95 7.051 350.53 335.96 4.0345 12.9675 0.275 3.6055 157.787 135.115 0.0651 0.000375 0.00107 0.008155 -0.0002 -0.001 0.000069 25.946 -0.0002 0.00484 0.008285 0.0185 -0.00005 17.0135 0.290125 0.03221 0.07224 -0.03 1.9615 0.00189 -0.00005 11.586 -0.00002 0.001795 0.000465 0.00295

All 41 14 P5 7.8425 327.972 40.0675 2.666 #N/A 0.11 1.091 2.8255 9.54 0.0191 -0.0001 0.0004 0.003325 -0.0002 -0.001 -0.00004 2.433 -0.0002 -0.0001 0.003845 -0.01 -0.00005 0.829 0.02726 0.000171 0.00119 -0.03 0.712 -0.0002 -0.00005 2.925 -0.00002 0.00032 -0.0002 0.0003

Median 7.06 387.935 163.38 4.015 #N/A 0.28 2.53 31.75 53.3 0.111 0.00035 0.00225 0.012 -0.0002 0.0275 0.00005 8.805 0.00005 0.00125 0.0086 0.065 -0.00005 6.97 0.1105 0.008 0.0128 -0.03 1.85 0.001 -0.00005 5.62 -0.00002 0.00185 0.00065 0.003

P95 3.6015 497.9195 393.907 33.7025 #N/A 0.85 11.764 202.7 127.35 1.0025 0.001135 0.003685 0.03885 0.00015 0.1975 0.003935 24.335 0.001895 0.18735 0.2761 3.155 0.00189 17.975 1.167 0.03318 1.2726 0.077 8.4475 0.003735 0.0004575 25.135 0.0001035 0.00502 0.00313 0.526

Max 3.4 512.2 464.64 59.67 #N/A 1.1 16.6 230 141 1.49 0.0012 0.0044 0.046 0.0008 0.23 0.0066 27 0.003 0.305 0.579 7.25 0.0028 18.3 1.31 0.0337 2.96 0.09 11.6 0.0038 0.0014 47.3 0.00011 0.0071 0.0043 1.15

SRK ConsultingOctober 2008 Appendix_B_Compiled_Draft_Data.1UP005.001.SD.ver00_Transmit_to_Barr.xls

Appendix C Sump Spoil Geochemical Data

Appendix C: Polymet Static Testing Page 1 of 6

CLIENT : SRK Consulting

PROJECT : Polymet Soil Samples

PROJECT # : 0518

TEST : Moisture Content

Date : April 13, 2010

Pre-MWMP Leach Test

Sample ID Wet Weight Dry Weight Moisture

(kg) (kg) %

J007 (0-3) 11.45 10.40 9.17

J007 (3-5) 11.45 10.70 6.55

J008 (0-3.5) 11.95 10.95 8.37

J008 (3.5-4.6) 11.60 10.75 7.33

J012 (0-3) 11.50 10.65 7.39

J012 (3-6) 11.50 10.55 8.26

J013 10.40 9.70 6.73

J019 (0-2) 12.95 10.85 16.22

J024 (0-2) 11.75 10.85 7.66

J029 (0-5) 11.55 10.50 9.09

J037 (0-3) 11.50 10.50 8.70

J037 (3-6) 11.30 10.35 8.41

J107 11.35 10.15 10.57

Post-MWMP Leach Test

Sample ID Wet Weight Dry Weight Moisture

(kg) (kg) %

J007 (0-3) 6.20 4.95 20.16

J007 (3-5) 5.70 4.95 13.16

J008 (0-3.5) 5.95 4.90 17.65

J008 (3.5-4.6) 5.85 4.95 15.38

J012 (0-3) 5.80 4.95 14.66

J012 (3-6) 5.90 5.05 14.41

J013 5.85 4.95 15.38

J019 (0-2) 6.25 4.95 20.80

J024 (0-2) 5.60 4.95 11.61

J029 (0-5) 5.90 4.95 16.10

J037 (0-3) 5.80 4.95 14.66

J037 (3-6) 5.65 4.95 12.39

J107 6.20 4.95 20.16

Appendix_C_ePolymet Static Testing Apr 09 10 (May 28 10).xls

SRK ConsultingAugust 2010




PROJECT # : 0518

Test : Meteoric Water Mobility Procedure

Date : April 26 - May 4, 2010

Leachate Analysis

Sample ID J007 (0-3) J007 (3-5) J008 (0-3.5) J008 (3.5-4.6) J012 (0-3) J012 (3-6) J013 J019 (0-2) J024 (0-2) J029 (0-5) J037 (0-3) J037 (3-6) J107 Blank

Parameter Method Units

Initial Dry Sample Wt kg 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 #N/A

Volume Influent mL 6.25 5.80 6.04 5.89 5.84 5.79 5.90 6.30 5.75 6.00 5.85 5.75 6.30 5.10

Volume Effluent mL 5.00 5.00 5.00 5.01 5.01 5.00 5.00 5.00 5.05 5.00 5.00 5.00 5.00 5.10

Sample Wet Wt After Extraction kg 6.20 5.70 5.95 5.85 5.80 5.90 5.85 6.25 5.60 5.90 5.80 5.65 6.20 #N/A

Sample Dry Wt After Extraction kg 4.95 4.95 4.90 4.95 4.95 5.05 4.95 4.95 4.95 4.95 4.95 4.95 4.95 #N/A

pH meter 6.52 6.75 6.58 6.62 6.74 6.9 6.53 6.49 6.49 6.62 6.25 6.42 5.85 6.65

Redox meter mV 340 338 352 354 346 346 361 264 262 283 297 293 318 223

Conductivity meter uS/cm 23 16 22 22 26 26 25 39 24 45 22 20 38 5

Acidity (to pH 4.5) titration mg CaCO3/L #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A #N/A

Total Acidity (to pH 8.3) titration mg CaCO3/L 3.1 2.9 3.3 2.9 4.0 3.1 3.9 5.7 4.5 4.7 5.2 5.2 4.6 3.6

Alkalinity titration mg CaCO3/L 3.5 5.3 5.2 5.7 5.8 7.2 6.8 5.5 3.3 5.6 2.7 3.8 1.8 2.9

Inorganic Carbon mg/L 1 1 1 1 1 2 1 1 -1 1 -1 -1 -1 -1

Fluoride mg/L 0.04 0.07 0.03 0.03 0.05 0.07 0.02 0.03 0.06 0.02 0.05 0.13 0.01 -0.01

Chloride mg/L -0.5 -0.5 -0.5 0.8 -0.5 0.6 0.8 -0.5 0.8 5.8 -0.5 -0.5 1.3 -0.5

Sulphate Turbidity mg/L 5 1.6 1.1 0.8 4.8 5.3 -0.5 7.4 4.3 2.8 4.4 2.1 10 -0.5

Ion Balance

Major Anions calc. meq/L 0.18 0.14 0.13 0.15 0.22 0.27 0.16 0.26 0.18 0.33 0.15 0.13 0.28 #N/A

Major Cations calc. meq/L 0.21 0.21 0.28 0.27 0.24 0.29 0.36 0.44 0.22 0.40 0.19 0.21 0.30 #N/A

Difference calc. meq/L -0.04 -0.06 -0.15 -0.12 -0.02 -0.01 -0.20 -0.17 -0.03 -0.06 -0.05 -0.09 -0.02 #N/A

Diff. (%) calc. meq/L -9.4% -18.3% -37.2% -27.5% -4.8% -2.2% -37.8% -24.4% -8.4% -8.8% -13.6% -25.6% -2.8% #N/A

Dissolved Metals

Hardness CaCO3 mg/L 6.2 5.4 8.8 8.2 7 7.9 10.3 15.9 7.3 15.2 6 5.6 9.2 -0.5

Aluminum Al ICP-MS mg/L 0.0815 0.141 0.257 0.201 0.049 0.205 0.559 0.215 0.0297 0.0778 0.0973 0.139 0.0284 0.006

Antimony Sb ICP-MS mg/L 0.00005 0.00005 0.00005 0.00006 0.00004 0.00004 0.00006 0.00006 0.00002 0.00004 0.00004 0.00007 0.00002 -0.0004

Arsenic As ICP-MS mg/L 0.00036 0.00037 0.00052 0.00057 0.00026 0.00039 0.00053 0.00039 0.00022 0.00026 0.00024 0.00043 0.0002 -0.0004

Barium Ba ICP-MS mg/L 0.00129 0.00212 0.0024 0.00184 0.00104 0.00334 0.00147 0.00061 0.00079 0.00117 0.00142 0.00212 0.00402 0.0009

Beryllium Be ICP-MS mg/L 0.00002 0.00002 0.00004 0.00005 0.00001 0.00002 0.00007 0.00003 -0.00001 0.00001 0.00002 0.00002 -0.00001 -0.0002

Bismuth Bi ICP-MS mg/L -0.000005 -0.000005 -0.000005 -0.000005 -0.000005 -0.000005 -0.000005 -0.000005 0.000019 -0.000005 -0.000005 -0.000005 -0.000005 -0.0001

Boron B ICP-MS mg/L -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -0.05 -1

Cadmium Cd ICP-MS mg/L 0.000007 -0.000005 0.000005 -0.000005 -0.000005 -0.000005 0.000013 -0.000005 -0.000005 0.000012 -0.000005 -0.000005 0.000026 -0.0001

Calcium Ca ICP-MS mg/L 1.57 1.35 2.58 2.35 1.64 1.82 3.01 4.07 1.82 4.46 1.34 1.15 2.13 -1

Chromium Cr ICP-MS mg/L 0.0003 0.0004 0.0008 0.0008 0.0004 0.0006 0.0015 0.0011 -0.0001 0.0002 0.0014 0.0014 -0.0001 -0.002

Cobalt Co ICP-MS mg/L 0.000295 0.000191 0.000242 0.000212 0.000128 0.00017 0.000293 0.000296 0.000123 0.00019 0.000129 0.000127 0.00036 -0.0001

Copper Cu ICP-MS mg/L 0.00513 0.00468 0.0069 0.00759 0.00437 0.00367 0.00622 0.00683 0.00398 0.00643 0.0036 0.00519 0.00221 -0.001

Iron Fe ICP-MS mg/L 0.015 0.133 0.143 0.127 0.035 0.239 0.179 0.177 0.033 0.027 0.081 0.152 0.004 -0.02

Lead Pb ICP-MS mg/L 0.000211 0.000125 0.000051 0.000044 0.000036 0.000114 0.000043 0.000034 0.000074 0.000006 0.000026 0.000152 0.000038 0.0012

Lithium Li ICP-MS mg/L -0.0005 -0.0005 -0.0005 -0.0005 -0.0005 0.0006 -0.0005 -0.0005 -0.0005 -0.0005 -0.0005 0.0006 -0.0005 -0.01

Magnesium Mg ICP-MS mg/L 0.54 0.49 0.57 0.56 0.71 0.82 0.68 1.4 0.68 0.99 0.65 0.67 0.93 -1

Manganese Mn ICP-MS mg/L 0.0133 0.00452 0.00656 0.00597 0.00344 0.00722 0.014 0.0033 0.0051 0.00475 0.0155 0.00687 0.0601 -0.001

Mercury Hg ICP-MS ug/L 0.02 0.02 0.02 0.02 0.01 0.01 0.02 0.02 -0.01 0.01 0.01 0.01 -0.01 -0.2

Molybdenum Mo ICP-MS mg/L -0.00005 0.00007 0.00012 0.00009 -0.00005 0.00006 0.00006 -0.00005 -0.00005 0.00012 -0.00005 0.00011 -0.00005 -0.001

Nickel Ni ICP-MS mg/L 0.00041 0.00067 0.00093 0.00113 0.00064 0.00073 0.00113 0.00035 0.00042 0.00037 0.00111 0.00116 0.00308 -0.0004

Potassium K ICP-MS mg/L 0.14 0.12 0.53 0.26 0.11 0.22 0.27 -0.05 0.09 0.37 0.09 0.15 0.84 -1

Selenium Se ICP-MS mg/L 0.00019 0.00013 0.0003 0.00024 0.00015 0.00008 0.0004 0.00031 0.00014 0.00019 0.00026 0.00019 0.00046 -0.0008

Silicon Si ICP-MS mg/L 13.5 11.5 8.26 8.65 11.3 11.4 7.45 12.5 11.2 7.59 12.1 14.5 8.22 -2

Silver Ag ICP-MS mg/L -0.000005 -0.000005 0.000008 0.000008 -0.000005 -0.000005 0.000014 0.000007 -0.000005 -0.000005 -0.000005 -0.000005 -0.000005 -0.0001

Sodium Na ICP-MS mg/L 1.98 1.66 1.25 1.65 2.23 2.01 1.62 1.94 1.52 1.95 1.65 1.67 2.14 -1

Strontium Sr ICP-MS mg/L 0.0109 0.008 0.0161 0.014 0.0109 0.0116 0.02 0.014 0.0123 0.0237 0.00786 0.00538 0.0186 -0.001

Tellurium Te ICP-MS mg/L -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.00002 -0.0004

Thallium Tl ICP-MS mg/L 0.000011 0.000003 0.000005 0.000003 -0.000002 -0.000002 0.000004 0.000004 -0.000002 0.000002 0.000003 0.000002 0.000008 -0.00004

Thorium Th ICP-MS mg/L 0.000022 0.000045 0.000199 0.000231 0.000028 0.000045 0.000626 0.000226 0.000013 0.000053 0.000036 0.000076 0.000006 -0.0001

Tin Sn ICP-MS mg/L 0.00004 0.0002 0.00009 0.00019 0.00025 0.00035 0.00045 0.00281 0.00272 0.00323 0.00282 0.0032 0.0036 0.0812

Titanium Ti ICP-MS mg/L -0.0005 0.0042 0.0046 0.004 0.001 0.0092 0.0051 0.0026 0.0006 0.0007 0.0018 0.0045 -0.0005 -0.01

Uranium U ICP-MS mg/L 0.000054 0.000089 0.000313 0.000339 0.000085 0.000057 0.000348 0.000333 0.000027 0.000094 0.000088 0.000122 0.000012 -0.00004

Vanadium V ICP-MS mg/L 0.0006 0.0009 0.0008 0.0009 0.0004 0.001 0.0006 0.001 0.0003 0.0004 0.0003 0.0012 0.0002 -0.004

Zinc Zn ICP-MS mg/L 0.0016 0.0009 0.0007 0.0006 0.0008 0.0011 0.0019 0.0011 0.0012 0.0015 0.001 0.001 0.0018 0.006

Zirconium Zr ICP-MS mg/L 0.0004 0.0004 0.0026 0.0028 0.0003 0.0003 0.0045 0.0026 -0.0001 0.0006 0.0004 0.0004 -0.0001 -0.002






PROJECT # : 0518

TEST : Screen Assay & Moisture Content


Sample ID Weight Sample ID Wet Weight Dry Weight Moisture

(g) (g) (%) (g) (%) (g) (g) %

J007 (0-3) 300.0 77.9 26.0% 221.9 74.0% J007 (0-3) 25.0 24.48 2.08

J007 (3-5) 300.0 106.5 35.5% 193.4 64.5% J007 (3-5) 25.0 24.67 1.32

J008 (0-3.5) 300.0 98.8 33.0% 201.0 67.0% J008 (0-3.5) 25.0 24.51 1.96

J008 (3.5-4.6) 300.0 126.1 42.1% 173.6 57.9% J008 (3.5-4.6) 25.0 24.64 1.44

J012 (0-3) 300.0 109.2 36.4% 190.6 63.6% J012 (0-3) 25.0 24.72 1.12

J012 (3-6) 300.0 128.5 42.9% 171.3 57.1% J012 (3-6) 25.0 24.70 1.20

J013 300.0 107.9 36.0% 192 64.0% J013 25.0 24.69 1.24

J019 (0-2) 300.0 49.9 16.6% 250 83.4% J019 (0-2) 25.0 24.47 2.12

J024 (0-2) 300.0 160.1 53.4% 139.7 46.6% J024 (0-2) 25.0 24.72 1.12

J029 (0-5) 300.0 67.4 22.5% 232.4 77.5% J029 (0-5) 25.0 24.65 1.40

J037 (0-3) 300.0 117.8 39.3% 181.7 60.7% J037 (0-3) 25.0 24.49 2.04

J037 (3-6) 300.0 147.1 49.0% 152.8 51.0% J037 (3-6) 25.0 24.71 1.16

J107 300.0 80.3 26.8% 219.4 73.2% J107 25.0 24.23 3.08

Moisture Content on the -2mm Fraction

+2mm -2mm






PROJECT # : 0518

TEST : Sobek Acid-Base Accounting


Sample ID Paste pH CO2 Equiv. CaCO3 Total S Sulphate Sulphur Diff. AP Sobek NP Net NP NP/AP Fizz Test

Std. Units % CO2 kg CaCO3/t % S % S % S kg CaCO3/t kg CaCO3/t kg CaCO3/t Ratio Visual

LOD 0.01 0.2 #N/A 0.01 0.01 #N/A #N/A 0.1 #N/A #N/A #N/A

Method Code Sobek C-GAS05 Calc. S-IR08 S-GRA06a Calc. Calc. Sobek NP Calc. Calc. Sobek

J007 (0-3) 5.44 <0.2 <4.5 0.02 <0.01 0.02 0.6 5.1 4.5 8.2 None

J007 (3-5) 6.83 <0.2 <4.5 0.01 <0.01 0.01 0.3 8.4 8.1 26.9 None

J008 (0-3.5) 6.23 <0.2 <4.5 <0.01 <0.01 <0.01 <0.3 8.9 8.9 29.7 None

J008 (3.5-4.6) 6.65 <0.2 <4.5 0.02 0.01 0.01 0.3 8.8 8.5 28.2 None

J012 (0-3) 6.57 <0.2 <4.5 0.01 0.01 <0.01 <0.3 7.2 7.2 24.0 None

J012 (3-6) 6.89 <0.2 <4.5 0.03 <0.01 0.03 0.9 7.3 6.4 7.8 None

J013 6.28 0.2 4.5 0.02 <0.01 0.02 0.6 7.8 7.2 12.5 None

J019 (0-2) 6.02 0.2 4.5 0.02 <0.01 0.02 0.6 5.2 4.6 8.3 None

J024 (0-2) 6.69 0.2 4.5 0.01 0.01 <0.01 <0.3 7.3 7.3 24.3 None

J029 (0-5) 6.55 1.2 27.3 0.02 0.01 0.01 0.3 9.4 9.1 30.1 None

J037 (0-3) 6.05 0.2 4.5 0.01 0.01 <0.01 <0.3 5.7 5.7 19.0 None

J037 (3-6) 7.10 0.2 4.5 0.01 0.01 <0.01 <0.3 7.0 7.0 23.3 None

J107 5.45 <0.2 <4.5 0.02 0.01 0.01 0.3 4.3 4.0 13.8 None

Duplicates

J007 (0-3) 5.50 5.7 None

Note:

Equivalent CaCO3 is calculated from the CO2 originating from carbonate minerals.

Sulphur Difference = Total S - Sulphate S

AP = Acid Potential in tonnes CaCO3 equivalent per 1000 tonnes of material. AP is calculated from the sulphur difference.

Sobek NP = Neutralization Potential in tonnes CaCO3 equivalent per 1000 tonnes of material.

NET NP = Sobek NP - AP






PROJECT # : 0518

TEST : Metals by Aqua Regia Digestion with ICP-MS Finish


Sample ID Ag Al As Au B Ba Be Bi Ca Cd Ce Co Cr Cs Cu Fe Ga Ge Hf Hg In K La Li Mg Mn Mo Na Nb Ni P Pb Rb Re S Sb Sc Se Sn Sr Ta Te Th Ti Tl U V W Y Zn Zr

ppm % ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm % ppm ppm % ppm ppm % ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm ppm ppm % ppm ppm ppm ppm ppm ppm ppm

LOD 0.01 0.01 0.1 0.2 10 10 0.05 0.01 0.01 0.01 0.02 0.1 1 0.05 0.2 0.01 0.05 0.05 0.02 0.01 0.005 0.01 0.2 0.1 0.01 5 0.05 0.01 0.05 0.2 10 0.2 0.1 0.001 0.01 0.05 0.1 0.2 0.2 0.2 0.01 0.01 0.2 0.005 0.02 0.05 1 0.05 0.05 2 0.5

Method Code ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41 ME-MS41

J007 (0-3) 0.04 2.01 2.2 <0.2 <10 50 0.4 0.06 0.44 0.05 35 12 64 0.7 24.5 3.25 5.82 0.09 0.17 0.01 0.021 0.06 13.8 8.8 0.61 388 0.53 0.09 1.26 42.9 440 3.9 7.1 <0.001 0.01 0.09 3.1 0.4 0.7 30.4 0.01 0.01 2.5 0.133 0.06 0.49 76 0.11 6.8 38 8

J007 (3-5) 0.03 1.1 2.4 <0.2 <10 40 0.28 0.05 0.45 0.05 34.5 7.8 65 0.71 19.4 2.63 3.8 0.12 0.28 <0.01 0.012 0.08 16.4 7.2 0.38 529 0.35 0.07 0.42 22.8 510 3.2 7.4 <0.001 0.01 0.07 3.1 0.3 0.5 34.5 <0.01 0.01 3 0.106 0.06 0.47 46 0.13 7.01 23 10.6

J008 (0-3.5) 0.02 1.61 2.3 <0.2 <10 50 0.33 0.05 0.46 0.05 35.3 11.2 69 0.57 25.4 2.98 4.92 0.1 0.22 0.01 0.017 0.08 18.3 8.2 0.57 395 0.44 0.08 0.62 36.6 480 3.2 7.8 <0.001 0.01 0.08 3.6 0.4 0.5 36.2 <0.01 <0.01 2.9 0.127 0.06 0.56 73 0.1 7.15 30 9.7

J008 (3.5-4.6) 0.02 1.57 2.6 <0.2 <10 50 0.34 0.06 0.55 0.06 37.8 11.2 76 0.64 28 3.14 5.04 0.13 0.29 <0.01 0.018 0.09 20.2 8.2 0.56 464 0.45 0.1 0.51 36.5 540 3.6 8.1 <0.001 0.01 0.09 4 0.4 0.6 39.7 <0.01 0.01 3.3 0.139 0.06 0.58 74 0.1 8.98 32 11.7

J012 (0-3) 0.02 1.16 2.4 <0.2 <10 40 0.3 0.06 0.38 0.04 36.9 8 73 0.75 28.2 2.68 3.99 0.12 0.22 0.01 0.013 0.08 18.4 7.6 0.39 488 0.38 0.06 0.49 23 500 3.5 7.5 <0.001 0.01 0.07 3.6 0.3 0.4 32 <0.01 0.01 3.4 0.111 0.06 0.55 49 0.12 7.8 24 9.1

J012 (3-6) 0.03 1.06 3.1 <0.2 <10 40 0.29 0.06 0.41 0.06 36.1 7.6 77 0.78 28.3 2.66 3.73 0.13 0.26 <0.01 0.012 0.09 17.1 7.4 0.35 516 0.39 0.07 0.38 19.8 520 3.5 8.2 <0.001 0.01 0.07 3.4 0.3 0.4 32.4 <0.01 0.01 3.2 0.109 0.06 0.52 45 0.12 6.87 24 10

J013 0.02 1.38 2 <0.2 <10 40 0.35 0.05 0.43 0.05 35.9 8.5 72 0.63 20.1 2.48 4.36 0.1 0.16 <0.01 0.015 0.09 15.2 8.6 0.44 390 0.4 0.07 1.05 25.8 470 3.3 8.3 <0.001 0.01 0.07 2.8 0.3 0.5 33.1 <0.01 <0.01 3.1 0.116 0.06 0.47 50 0.11 5.83 26 7.3

J019 (0-2) 0.05 2.23 1.4 <0.2 <10 40 0.44 0.05 0.67 0.05 33.3 9.2 47 0.63 18.5 2.56 6.09 0.1 0.12 0.01 0.021 0.07 21.3 9 0.43 251 0.48 0.15 1.42 30.1 300 3.3 8.1 <0.001 0.01 0.08 3.8 0.4 0.7 42.5 0.01 0.01 2.1 0.114 0.05 0.81 55 0.11 9.82 40 5.4

J024 (0-2) 0.03 1.11 3.2 <0.2 <10 40 0.33 0.06 0.39 0.05 30.6 8.6 82 0.83 20 3.01 4.21 0.12 0.22 0.01 0.015 0.08 14.6 8.6 0.39 499 1.85 0.07 0.45 25.1 440 3.6 8.1 0.001 <0.01 0.09 3.5 0.2 0.5 29.8 <0.01 0.01 3.9 0.106 0.07 0.64 51 0.12 6.98 24 9.1

J029 (0-5) 0.02 1.81 1.9 <0.2 <10 40 0.36 0.05 0.66 0.07 31.6 12.9 59 0.61 28.7 3 5.73 0.1 0.23 0.01 0.02 0.07 14.8 10 0.69 345 0.88 0.13 0.66 48.7 460 3.3 6.9 0.001 <0.01 0.09 3.6 0.2 0.6 40.7 0.01 0.01 3.2 0.113 0.07 0.62 64 0.1 8 32 10.1

J037 (0-3) 0.03 1.2 2.3 <0.2 <10 40 0.33 0.07 0.39 0.03 31.9 8.5 70 0.69 23.1 2.53 4.26 0.1 0.16 0.01 0.014 0.06 15.2 8.1 0.34 505 0.5 0.06 0.77 25.4 440 4 7.1 <0.001 <0.01 0.09 3.5 0.3 0.5 28.1 <0.01 0.01 3.9 0.097 0.06 0.61 46 0.11 7.1 21 7.4

J037 (3-6) 0.03 0.88 2.6 <0.2 <10 40 0.29 0.08 0.43 0.06 31.2 6.8 72 0.66 17.3 2.44 3.39 0.11 0.24 0.01 0.012 0.09 14.2 7.6 0.32 442 0.49 0.07 0.36 20.6 520 3.8 7.1 <0.001 <0.01 0.08 2.9 0.2 0.4 28.4 <0.01 0.01 3.8 0.087 0.06 0.52 38 0.11 6.13 22 9.2

J107 0.07 2.26 3.4 <0.2 <10 50 0.49 0.09 0.35 0.08 33.1 15.5 69 1.08 86.7 3.87 7.25 0.1 0.14 0.02 0.022 0.07 12 15.7 0.77 371 0.87 0.06 1.62 79.9 560 4.9 13 <0.001 <0.01 0.13 3.6 0.4 0.7 23.2 0.01 0.01 3.7 0.131 0.09 0.79 91 0.14 5.19 44 6.3






PROJECT # : 0518

TEST : Metals by 1N Nitric Acid Digestion with ICP-MS Finish on -2mm fraction

Date : April 26/27, 2010

Sample ID As Cd Cr Cu Hg Pb Se Zn Ag Al B Be Bi Ca Ce Co Cs Fe Ga Hf In K La Li Mg Mn Mo Na Nb Ni P Rb Sb Sn Sr Ta Te Th Tl U V W Y Zr

ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L

LOD 10 0.1 1 0.3 0.2 0.2 10 2 0.06 50 10 0.3 0.1 200 0.02 0.1 0.01 20 0.05 0.05 0.04 60 0.02 10 4 0.1 1 300 0.02 0.5 100 0.1 0.1 0.3 0.1 0.01 10 0.01 0.04 0.01 1 0.2 0.03 0.05

Method Code ME-MS14a ME-MS14a ME-MS14a ME-MS14a ME-MS14a ME-MS14a ME-MS14a ME-MS14a ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b ME-MS14b

J007 (0-3) 20 2.8 549 603 <0.2 292 <10 419 0.27 >10000 40 38.2 12.1 >10000 >1000 566 7.74 >10000 231 10.95 1.3 7880 >1000 140 >10000 >1000 5 8900 16.45 849 >10000 144.5 2.2 18 >1000 1.72 <10 89.2 1.03 43.7 >1000 25.3 692 336

J007 (0-3) DUP 20 2.4 540 451 <0.2 277 <10 389 0.8 >10000 40 38 5 >10000 >1000 561 7.32 >10000 218 11.05 0.8 7630 >1000 150 >10000 >1000 4 >10000 15.6 914 >10000 135.5 2 28.2 >1000 1.62 <10 89.2 0.97 39.5 >1000 3.6 657 333

J007 (3-5) 30 2.9 462 646 <0.2 232 <10 683 0.71 >10000 10 19 4.6 >10000 >1000 483 8.18 >10000 152.5 2.86 1.19 >10000 >1000 300 >10000 >1000 2 6600 2.33 864 >10000 119.5 0.6 2.9 >1000 0.7 <10 153.5 0.81 30.5 880 3.6 618 108.5

J007 (3-5) DUP 30 2.8 465 590 <0.2 224 <10 632 0.35 >10000 10 20.1 2.4 >10000 >1000 518 8.4 >10000 163.5 2.78 0.5 >10000 >1000 290 >10000 >1000 2 7300 2.29 923 >10000 129 0.4 1.7 >1000 0.72 <10 163 0.89 32.1 944 1.2 631 110.5

J008 (0-3.5) 30 3 482 702 0.6 252 10 518 0.57 >10000 10 26 2.4 >10000 >1000 643 2.24 >10000 185 6.61 0.73 >10000 >1000 250 >10000 >1000 2 6600 6.03 >1000 >10000 116.5 1 2.5 >1000 0.67 <10 133 1.52 46 >1000 2.3 679 235

J008 (0-3.5) DUP 30 2.8 499 644 0.8 265 10 526 0.54 >10000 10 26.5 2.1 >10000 >1000 701 2.45 >10000 195.5 7 0.77 >10000 >1000 250 >10000 >1000 3 6100 7.23 >1000 >10000 124.5 0.6 1.3 >1000 0.81 <10 153.5 1.75 48.1 >1000 1 706 269

J008 (3.5-4.6) 40 2.7 389 783 0.2 260 10 569 0.98 >10000 10 22.2 3.2 >10000 >1000 617 2.32 >10000 165.5 4.8 1.27 >10000 >1000 220 >10000 >1000 2 5900 4.08 >1000 >10000 81.2 0.9 2.5 >1000 0.59 <10 143.5 1.2 36.6 905 1.4 791 187.5

J008 (3.5-4.6) DUP 40 2.7 420 748 0.6 282 10 601 0.51 >10000 10 22.2 2.9 >10000 >1000 710 2.78 >10000 181 5.28 0.66 >10000 >1000 240 >10000 >1000 3 6600 5.22 >1000 >10000 96.5 0.7 2.1 >1000 0.81 <10 176.5 1.56 40.6 >1000 1.4 871 219

J012 (0-3) 20 2.1 571 842 <0.2 300 <10 581 0.54 >10000 10 18.9 2 >10000 >1000 406 10.05 >10000 148 3.48 0.51 7560 >1000 240 >10000 >1000 2 5600 5.66 708 >10000 114.5 1.5 2 >1000 1.04 <10 133 1.24 39.4 >1000 1 716 135

J012 (0-3) DUP 30 2.7 604 911 0.4 271 <10 621 0.37 >10000 10 21 2.2 >10000 >1000 472 10.85 >10000 166 3.72 0.55 8610 >1000 270 >10000 >1000 2 5600 6.52 826 >10000 129 0.9 1.4 >1000 1.27 <10 157.5 1.58 40.9 >1000 0.9 773 156

J012 (3-6) 30 3.1 535 926 <0.2 231 <10 707 0.32 >10000 10 18.1 2.2 >10000 >1000 389 7.4 >10000 147.5 2.66 0.68 >10000 >1000 280 >10000 >1000 1 5900 2.63 687 >10000 115.5 1.1 1.7 >1000 0.75 <10 165.5 0.67 35 1000 0.9 595 97.5

J012 (3-6) DUP 30 2.7 530 936 <0.2 246 <10 680 0.25 >10000 10 18.5 2.2 >10000 >1000 432 8.22 >10000 156.5 2.76 0.48 >10000 >1000 300 >10000 >1000 1 6200 2.61 709 >10000 130.5 0.6 1.4 >1000 0.87 <10 172 0.55 35.1 >1000 0.8 614 100.5

J013 30 3 436 529 0.2 243 <10 460 0.83 >10000 10 18.2 2.9 >10000 >1000 419 4.58 >10000 139.5 5.11 0.94 >10000 >1000 180 >10000 >1000 2 5100 11.05 584 >10000 121.5 0.6 1.9 >1000 0.72 <10 90.2 1.48 26.5 764 3.6 410 173

J013 DUP 30 3.5 453 521 <0.2 279 <10 467 0.3 >10000 10 20.8 2.6 >10000 >1000 511 4.33 >10000 160.5 5.87 0.54 >10000 >1000 180 >10000 >1000 3 5700 14.85 785 >10000 127.5 1.1 2.2 >1000 0.77 <10 92.3 1.65 29.3 830 1 456 212

J019 (0-2) 10 2.6 351 468 <0.2 194.5 10 257 0.29 >10000 10 31.3 1.1 >10000 >1000 341 3.69 >10000 179 9.67 0.76 4870 >1000 70 >10000 >1000 3 8600 10.4 379 >10000 129.5 0.7 1 >1000 0.88 <10 77.3 1.34 96.3 >1000 1.3 >1000 276

J019 (0-2) DUP 10 2.6 385 454 <0.2 213 10 301 0.41 >10000 <10 37.9 4.7 >10000 >1000 449 4.04 >10000 208 9.26 0.81 7070 >1000 90 >10000 >1000 3 >10000 12.55 592 >10000 141 1.7 29.3 >1000 1.28 <10 86.9 0.3 105 >1000 4.6 >1000 301

J024 (0-2) 30 2.4 684 548 <0.2 238 <10 633 0.29 >10000 10 22.2 8.3 >10000 >1000 463 9.24 >10000 164 3.28 0.66 8310 >1000 310 >10000 >1000 2 5400 4.82 768 >10000 120 1.1 2.4 >1000 1.16 <10 141.5 1.25 37.3 >1000 20.8 657 124

J024 (0-2) DUP 30 2.2 664 495 0.2 243 <10 606 0.27 >10000 10 22.1 2.5 >10000 >1000 528 9.36 >10000 163 3.05 0.56 8830 >1000 320 >10000 >1000 2 5600 4.81 860 >10000 122.5 0.7 1.5 >1000 1.34 <10 169.5 1.51 39.3 >1000 0.9 674 127

J029 (0-5) 30 3.2 324 718 0.6 209 <10 533 0.82 >10000 10 24.1 1.7 >10000 >1000 593 3.05 >10000 186 4.97 0.76 >10000 >1000 180 >10000 >1000 2 7400 4.89 >1000 >10000 108 0.5 1.8 >1000 0.61 <10 87.6 1.5 34.7 733 1.1 672 191

J029 (0-5) DUP 30 3.5 350 713 0.7 221 <10 569 0.64 >10000 10 25.1 1.8 >10000 >1000 675 3.25 >10000 203 5.8 0.72 >10000 >1000 180 >10000 >1000 2 8500 6.32 >1000 >10000 117.5 0.6 0.9 >1000 0.92 <10 99.2 1.6 37.9 816 1.8 756 222

J037 (0-3) 20 1.7 655 515 <0.2 297 10 559 0.35 >10000 10 20.9 2.1 >10000 >1000 584 7.89 >10000 151.5 4.29 0.66 6880 >1000 240 >10000 >1000 2 5800 6.69 738 >10000 123.5 1 1.9 >1000 1.05 <10 142 2.02 37.9 >1000 1.1 665 153.5

J037 (0-3) DUP 20 1.5 690 489 <0.2 282 10 538 0.36 >10000 10 21 2.4 >10000 >1000 596 8.92 >10000 157.5 4.57 0.56 7590 >1000 250 >10000 >1000 2 5800 7.07 742 >10000 135.5 0.8 1.3 >1000 1.16 <10 147.5 2.25 38.3 >1000 0.7 642 155.5

J037 (3-6) 30 3.4 551 524 <0.2 200 10 783 0.21 >10000 10 15 2.3 >10000 >1000 430 7.88 >10000 141 2.02 0.47 >10000 >1000 310 >10000 >1000 1 6400 2.33 763 >10000 119 0.4 1.8 >1000 0.79 <10 164.5 0.65 29.6 >1000 0.8 520 73.3

J037 (3-6) DUP 40 3.6 564 522 0.2 235 <10 807 0.17 >10000 10 15.4 2.2 >10000 >1000 466 9.08 >10000 148 2.03 0.39 >10000 >1000 310 >10000 >1000 2 6700 2.18 808 >10000 135 0.4 1.8 >1000 0.78 <10 169.5 0.6 29 >1000 0.8 526 73.4

J107 40 4.4 799 >1000 0.2 347 <10 617 0.58 >10000 30 52.4 5 >10000 >1000 656 10.3 >10000 312 12.05 1.05 >10000 783 240 >10000 >1000 4 8700 22 >1000 >10000 321 2.5 19.9 950 1.68 <10 64.3 1.18 51.3 >1000 3.4 429 336

J107 DUP 30 4.3 761 >1000 0.2 357 <10 606 0.54 >10000 40 49 6 >10000 >1000 675 10.9 >10000 324 12.75 0.97 >10000 782 240 >10000 >1000 4 9000 24.4 >1000 >10000 326 3 21 955 1.97 <10 66.8 1.62 53.2 >1000 4 422 354

Blank <10 0.1 2 84.4 <0.2 3.1 <10 34 0.09 70 <10 <0.3 0.1 200 0.05 0.8 0.02 130 0.07 <0.05 <0.04 <60 0.02 <10 103 1.6 <1 300 <0.02 1.1 100 0.1 0.1 3.7 0.5 0.01 <10 0.01 <0.04 0.01 <1 0.2 <0.03 0.11

Sample ID Ag Al As Ba Be Ca Cd Co Cr Cu Fe K Mg Mn Mo Na Ni P Pb Sb Sr Ti V Zn

mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L

LOD 0.01 1 0.05 0.1 0.001 0.5 0.001 0.02 0.02 0.01 1 5 0.05 0.01 0.01 1 0.01 1 0.05 0.05 0.01 1 0.01 0.01

Method Code ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14 ME-ICP14

J007 (0-3) 0.01 123 <0.05 0.5 0.004 17.6 0.001 0.06 0.1 0.11 95 <5 13.25 3.17 <0.01 <1 0.11 5 <0.05 <0.05 0.11 1 0.17 0.07

J007 (0-3) DUP <0.01 116 <0.05 0.5 0.004 17.1 <0.001 0.06 0.09 0.07 95 <5 14.55 3.14 <0.01 <1 0.12 5 <0.05 <0.05 0.11 1 0.17 0.06

J007 (3-5) <0.01 388 0.1 3.1 0.02 308 0.004 0.5 0.78 1.13 615 12 178 41.3 <0.01 6 1.01 82 0.27 <0.05 1.69 6 0.95 1.19

J007 (3-5) DUP <0.01 408 <0.05 3.4 0.02 323 0.005 0.55 0.8 1.07 671 13 190.5 49.2 <0.01 7 1.01 86 0.25 <0.05 1.81 7 1.04 1.16

J008 (0-3.5) <0.01 514 <0.05 4.4 0.027 310 0.004 0.68 0.88 1.36 734 16 208 31.2 <0.01 7 1.17 70 0.22 <0.05 2.32 7 1.35 0.98

J008 (0-3.5) DUP <0.01 546 0.07 4.7 0.028 310 0.006 0.74 0.94 1.29 862 17 258 34.8 <0.01 6 1.44 68 0.25 <0.05 2.37 9 1.47 1.02

J008 (3.5-4.6) <0.01 457 0.09 4.1 0.023 317 0.003 0.66 0.71 1.59 642 12 204 36.7 <0.01 6 1.3 81 0.23 <0.05 1.78 6 1.02 1.08

J008 (3.5-4.6) DUP <0.01 527 0.09 4.6 0.025 356 0.003 0.78 0.83 1.62 801 14 267 42.9 <0.01 8 1.69 93 0.31 <0.05 2.02 8 1.21 1.24

J012 (0-3) <0.01 422 0.08 3.5 0.02 269 0.002 0.43 1.05 1.6 653 8 167.5 31.5 <0.01 5 0.81 74 0.3 <0.05 1.49 12 1.24 1.06

J012 (0-3) DUP <0.01 447 0.09 3.7 0.022 274 0.003 0.5 1.07 1.7 708 9 186.5 36.8 0.01 6 0.91 75 0.26 <0.05 1.53 13 1.32 1.12

J012 (3-6) <0.01 349 0.15 3.4 0.019 298 0.003 0.41 0.9 1.67 631 12 167 30 0.01 6 0.76 80 0.23 <0.05 1.46 9 1.13 1.23

J012 (3-6) DUP <0.01 360 <0.05 3.5 0.02 303 0.005 0.44 0.93 1.75 675 14 176 35 0.01 6 0.82 81 0.24 <0.05 1.54 9 1.2 1.23

J013 <0.01 502 <0.05 3.6 0.019 243 0.005 0.45 0.7 0.9 490 12 117 29.7 <0.01 5 0.67 68 0.27 <0.05 1.39 8 0.84 0.72

J013 DUP <0.01 599 0.15 3.8 0.022 258 0.006 0.54 0.71 0.87 579 11 146.5 36.3 <0.01 6 0.84 75 0.32 <0.05 1.48 9 0.91 0.74

J019 (0-2) <0.01 805 0.05 3.5 0.032 203 0.007 0.35 0.64 0.91 772 5 80 14.6 <0.01 8 0.4 26 0.2 <0.05 1.79 3 2.09 0.48

J019 (0-2) DUP <0.01 896 0.08 3.7 0.033 225 0.006 0.42 0.68 0.88 883 6 109.5 17.05 <0.01 8 0.56 33 0.17 <0.05 1.96 4 2.22 0.55

J024 (0-2) <0.01 402 <0.05 3 0.023 260 0.004 0.47 1.25 1.05 823 8 186 34.8 0.01 5 0.89 62 0.24 <0.05 1.57 14 1.54 1.13

J024 (0-2) DUP <0.01 416 <0.05 3.2 0.023 268 0.005 0.55 1.27 0.96 833 9 197.5 40.5 <0.01 6 0.94 66 0.26 <0.05 1.64 15 1.57 1.15

J029 (0-5) <0.01 747 <0.05 4.4 0.025 267 0.005 0.62 0.56 1.31 616 13 194 24.3 <0.01 7 1.18 66 0.21 <0.05 2.06 5 0.79 0.94

J029 (0-5) DUP <0.01 810 <0.05 4.7 0.026 292 0.005 0.7 0.62 1.36 739 13 246 26.5 <0.01 9 1.51 74 0.19 <0.05 2.18 5 0.87 1.04

J037 (0-3) <0.01 419 <0.05 4.1 0.022 249 0.002 0.61 1.16 0.95 858 7 172 58.2 <0.01 6 0.82 59 0.27 <0.05 1.33 10 1.76 0.98

J037 (0-3) DUP <0.01 435 0.05 4.1 0.023 253 0.002 0.66 1.23 0.91 914 8 180 60.5 <0.01 6 0.86 59 0.28 <0.05 1.35 11 1.96 0.96

J037 (3-6) <0.01 319 0.06 3.4 0.016 309 0.005 0.47 0.92 0.91 619 12 192.5 37.2 <0.01 7 0.86 87 0.17 <0.05 1.27 8 1.18 1.33

J037 (3-6) DUP <0.01 332 0.08 3.2 0.017 314 0.004 0.49 0.93 0.9 653 13 199.5 40.9 <0.01 7 0.89 89 0.21 <0.05 1.29 8 1.21 1.34

J107 <0.01 167 <0.05 0.6 0.005 14.4 <0.001 0.07 0.13 0.46 90 <5 16.8 2.74 <0.01 <1 0.2 5 <0.05 <0.05 0.09 1 0.18 0.09

J107 DUP <0.01 172 <0.05 0.6 0.005 14.1 <0.001 0.07 0.13 0.42 98 <5 19.4 2.86 <0.01 <1 0.21 5 <0.05 <0.05 0.1 1 0.18 0.09

Blank

A Blank was setup and run through the analysis process.

Duplicate 3.00 g samples (oven dry basis) were extraced with 15

mL of 1N nitric acid (2N nitric acid for samples containing free

carbonates) in 50 mL polypropylene tubes and shaken for 20 h

on a reciprocal shaker.

The tubes were then centrifuged at maximum RPM for 10

minutes and an aliquote filtered for metal analysis by the same

suite of metals as conducted on the solids (Code ME-MS41).



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